Hellfest 2026: Iron Maiden's 50th, The Dillinger Escape Plan Returns, and Four Days of Beautiful Chaos in Clisson
183 bands, six stages, four days, one city that becomes the capital of the world's metal for a weekend: your complete guide to Hellfest 2026 — with full lineup analysis, the Acid Bath and DEP reunion stories, the Warzone tradition, the mud lore, and predictions on who joins whom.
By Gabin Fay
The city of Clisson has a population of around eight thousand people. On the third weekend of June 2026, it becomes one of the most densely populated metal cities on earth, as an estimated 240,000 people converge on the Domaine de la Boisselière — a former wine estate that has been transformed, over two decades, into the most elaborately themed festival site in Europe. Blacksmiths. Medieval towers. A chapel. A Harley-Davidson garage. A dedicated mausoleum to Lemmy Kilmister. And across four days — June 18 to 21, 2026 — 183 bands on six stages, playing everything from polka-infused death metal to fifty-year-old NWOBHM to Louisiana sludge to Polish black metal to French parody thrash.
The 2026 edition is called "Tales from the Pit." The name suits it. The headliners alone — Bring Me the Horizon, Iron Maiden, Limp Bizkit, The Offspring — span four different generations of heavy music and four entirely different conceptions of what a metal festival headliner is supposed to sound like. Below them, the lineup contains two of the most significant reunion events in heavy music's recent history: Acid Bath, playing their first shows since bassist Audie Pitre died in a car accident in January 1997, and The Dillinger Escape Plan, reassembled for a handful of European dates after eight years of effective dormancy. Both of those stories deserve careful attention. So does the structural history of this place: the Warzone stage and its punk-hardcore DNA, the mud-pit lore, the founding mythology, the way Ben Barbaud turned a struggling civic festival in a Loire-Atlantique wine town into the event that, year after year, defines what a European metal festival can be.
→ Hellfest 2026 — the 50-track lineup playlist (generated by Playgen)
Iron Maiden — The Number of the Beast (1982). The centrepiece of Friday's mainstage billing.
The Origin Story: How Ben Barbaud Turned a Wine Estate Into the Biggest Metal Festival in the World
Before Hellfest, there was Furyfest. Ben Barbaud founded the CLS Crew in November 2000, an association in the Clisson area aimed at promoting young music groups in the Loire-Atlantique region. His background was hardcore — not metal in the classic NWOBHM sense, but the American hardcore tradition that ran through Black Flag, Minor Threat, and into the metalcore and mathcore scenes of the 1990s. The first Hardcore Furyfest ran in June 2002 in Clisson's multipurpose hall, attended by four hundred people. Subsequent editions moved to Nantes and then Le Mans, growing incrementally, before the 2005 edition collapsed under financial pressure and left Barbaud with debts and a project that seemed finished.
What happened next is the piece of Hellfest lore that its devotees tell most often. Barbaud heard that the city of Clisson was organising a generalist festival project that was running into difficulties, and he proposed to take it over — for free, without revealing his actual intentions. The city accepted. The festival, which had been positioned as a family rock event, was quietly transformed into something else: a metal festival with a genre scope that would eventually encompass death metal, black metal, hardcore, punk, doom, stoner rock, power metal, folk metal, and everything in between. The first Hellfest ran in 2006. It lost 200,000 euros.
The name itself was borrowed: there had been a festival called Hellfest in New York in the late 1990s, a hardcore event that folded under circumstances similar to Barbaud's Furyfest. The homage is deliberate. Barbaud framed his 2006 festival as a continuation of something that had been cut off, a resurrection.
By 2007, the lineup included Slayer, Korn, Megadeth, and Dream Theater. By 2010, Hellfest was regularly drawing over 100,000 attendees. The site expanded continuously — first six stages, then seven, then back to the current configuration of six as the layout was redesigned to improve crowd flow. The Domaine de la Boisselière, with its castle ruins, its vineyards, and its medieval architecture, became the permanent home and the aesthetic identity. Nowhere else in the festival world does a death metal stage sit adjacent to an actual functioning medieval tower.
Six Stages, Four Days: What Happens Where
Understanding Hellfest requires understanding the stage hierarchy, because the six stages have distinct identities that have evolved over twenty editions.
Mainstage 1 and Mainstage 2 are the twin main stages, positioned at the top of the site in a configuration that allows back-to-back performances without downtime. The headliners rotate between them. The audience in front of the mainstairs is the largest crowd in the world that regularly assembles specifically for metal.
The Warzone is the heart of the punk and hardcore tradition at Hellfest, and it carries the DNA of Barbaud's Furyfest origins. It is an indoor stage — the only fully covered stage at the festival — which means it functions as both a refuge from Loire-Atlantique rain and a pressure cooker for pit energy. Acts like Agnostic Front, Bad Religion, Cro-Mags, Anti-Flag, GBH, the Exploited, and Social Distortion have passed through the Warzone over the years. In 2016, it was renovated and enlarged, and a mausoleum was added and dedicated to Lemmy Kilmister, inaugurated by Phil Campbell of Motörhead and Barbaud himself. The Lemmy shrine is now a pilgrimage site within the festival — thousands of people stop at it every edition. For many attendees, arriving at the Lemmy mausoleum is the first act of the festival, before they've heard a note.
The Valley is the doom, stoner, and post-rock stage — the longest aesthetic drift from the mainstairs sound. Mastodon, Cult of Luna, Amenra, High on Fire, Electric Wizard, Sleep: the Valley audience is not the same audience as the Mainstage 1 crowd, and the distance between the stages makes this self-selection explicit. The Valley in summer is sometimes hot enough that the sludge feels structural.
The Altar is the death metal and technical metal stage. Blood Incantation. Deicide. Carcass. Periphery. Crypta. The Altar runs between the Valley and the Temple aesthetically: harder than doom, more clinical than black metal, technically demanding in a way that rewards sustained attention.
The Temple is the black metal and extreme stage — the most separated, the darkest, the one where the production values are deliberately minimal and the stagecraft is about atmosphere over spectacle. Behemoth on the Temple stage is a different proposition than Behemoth on any other stage; the architecture of the space suits them.
Thursday 18 June: Bring Me the Horizon Opens, Deep Purple Closes Mainstage 2
The 2026 festival opens on a Thursday — a format that has held since Hellfest expanded from three days to four. The headliner opening the event sets a tone that the next three days have to accommodate and respond to.
Bring Me the Horizon opening the 2026 edition is a statement about where heavy music is positioned commercially in the mid-2020s. They are the best argument available that pop-metal, or metalcore-pop, or whatever you want to call what they've been doing since That's the Spirit (2015), is not an aesthetic compromise but an aesthetic achievement. POST HUMAN: NeX GEn (2024) is their most recent record: it features Lil Uzi Vert, Babymetal, Yungblud, and Spiritbox, and it sounds exactly like what happens when you take a Sheffield band that started as a deathcore act in 2004 and apply two decades of consistent ambition to the problem of making heavy music that the mainstream can access without the music needing to apologise for what it is. Oliver Sykes' vocals have evolved from the breakdowns-and-screams architecture of Count Your Blessings (2006) to something closer to post-punk melodicism, and the production — handled in parts by the band themselves alongside PVRIS and Machine — is enormous.
Bring Me the Horizon — POST HUMAN: NeX GEn (2024). Thursday headliner.
Supporting Bring Me the Horizon on Mainstage 1 on Thursday: Papa Roach, who have been doing this for thirty years and can still close Last Resort with the authority of a band for whom that song never stopped being the most important fifteen seconds in any festival set; Breaking Benjamin, whose radio-metal was formative for a specific generation of early-2000s rock fans and who deliver it live with a consistency that borders on uncanny; The Plot in You and We Came As Romans, both in the post-hardcore-to-rock-transition lane that Thursday's bill explores.
On Mainstage 2, Deep Purple and Alice Cooper divide the veteran-rock end of Thursday between them. Deep Purple in 2026 are a different entity than they were at peak Highway Star velocity, but they are also, improbably, still a functioning band — surviving line-up changes that have claimed every other original member except Roger Glover and Ian Paice, and adding to the legacy with albums (Whoosh! in 2020, =1 in 2021) that weren't embarrassments. The The Pretty Reckless, fronted by Taylor Momsen, and Mikkey Dee with Friends round out the Mainstage 2 Thursday bill.
The Thursday Warzone lineup — Social Distortion, All Time Low, Lagwagon, Shelter, Satanic Surfers — is a document of three decades of punk and hardcore that reads like a curatorial statement: here is where we come from, here is the DNA. Social Distortion have been playing "Ball and Chain" since 1990 and it still works. The Thursday Valley bill — Kadavar, Uncle Acid and the Deadbeats, The Inspector Cluzo, Elder, Truckfighters — covers the stoner and proto-doom spectrum from German psych-rock to Swedish desert rock.
The Temple on Thursday opens its four-day run with Feuerschwanz, Skáld, Borknagar, Winterfylleth, and Perchta — folk, pagan, and atmospheric black metal that establishes the Temple's curatorial direction immediately.
Friday 19 June: Iron Maiden's 50th Anniversary and the Dillinger Escape Plan's Resurrection
Friday is the day most people will point to as the 2026 Hellfest's centrepiece. Iron Maiden headlining Mainstage 1 on the fifty-year anniversary of their formation is not a surprising booking — Maiden have played Hellfest before, and the Run For Your Lives tour was announced explicitly as a multi-year global farewell/celebration — but the specific nature of the performance is what makes it historically significant.
The Run For Your Lives tour, announced in late 2025 and opening in Auckland in November 2025, is built around the first nine Iron Maiden albums: from the self-titled 1980 debut through Fear of the Dark (1992). Steve Harris has described the setlist construction as an attempt to represent every phase of the early career — the Paul Di'Anno era (1980–1981), the Bruce Dickinson NWOBHM peak (1982–1984), the Somewhere in Time synth experiments (1986), the operatic ambition of Seventh Son of a Seventh Son (1988), and the leaner hard rock of No Prayer for the Dying and Fear of the Dark. The opening nights of the tour featured the first live performance of Infinite Dreams since 1988 — a track from the Seventh Son album that had essentially been retired from the touring rotation for nearly four decades. If they do it again at Hellfest, it will be the moment of the Friday night.
What Iron Maiden 2026 brings to Clisson is not just a legacy act playing the hits. The Run For Your Lives production is one of the most elaborate stage designs Maiden have attempted since the Somewhere Back in Time world tour: expanded Eddie figures, pyrotechnics calibrated per song, the specific Derek Riggs artwork projected at scale behind each track. They are the band that invented the modern metal festival headliner set as visual event, in the 1980s, and they are closing that era of their career with the full production.
Also on Friday Mainstage 1: Ultra Vomit, the French parody metal band who have been occupying a unique position in the French metal scene since 1999 — part Weird Al, part technical thrash, part chaos act — and whose Hellfest slot represents one of the more joyful moments in French metal history. Ultra Vomit on the same main stage as Iron Maiden is not ironic: it is a tribute to the range of what Hellfest considers metal. Also: Helloween (German power metal, the Keeper of the Seven Keys records, one of the most devoted fanbases in metal), Accept (German heavy metal founding institution), Queensrÿche (progressive metal from Seattle, Operation: Mindcrime still unmatched), Sortilège (French heavy metal from the 1980s, briefly legendary, returning after decades), Wings of Steel, and Blackrain.
Friday Mainstage 2 runs Sabaton (Swedish power metal whose focus on military history makes them the most successful niche band in the world), Opeth (Swedish progressive death metal whose Mikael Åkerfeldt has the most technically demanding throat in a festival context since Jorn Lande), Sepultura (Brazilian thrash institution, the last time most of this lineup plays together in Europe), Bloodywood (Indian folk-metal, one of the most rapidly expanding metal bands of the last five years), Tesseract (UK djent), and Brothers of Metal.
And then there is the Friday Warzone, which is where the 2026 Hellfest becomes something close to historic.
The Dillinger Escape Plan are on the Warzone on Friday.
The band formally announced their dissolution in December 2017, following a final tour and a final album (Dissociation, 2016) that served as a meticulous statement of intent. Greg Puciato, the vocalist who had been with the band since 2001, described the breakup as necessary rather than regrettable: he had solo work to do (Child Soldier: Creator of God in 2020, Feral in 2022), and the Dillinger body of work was complete. The reunion announcement, made in early 2026, came with the specific framing that it was a European summer only — not a new record, not a world tour, but a return for a finite run of shows that includes Graspop on June 18, Hellfest on June 19, an L'Elysée Montmartre date in Paris on June 20, and London Brixton on June 22.
The decision to play the Warzone — not the Altar, not the main stage — is the curatorial choice that shows Barbaud's understanding of the band's lineage. The Dillinger Escape Plan came out of the New Jersey hardcore scene in the late 1990s. They are a mathcore band whose earliest audiences were hardcore audiences; Calculating Infinity (1999) is the album that defined the genre. Ire Works* (2007) was the album that bridged mathcore into something more catholic: ambient passages, melody, production ambition. One of Us Is the Killer (2013) was the full realisation. The Warzone is the right stage for them: the enclosed space, the pit physics, the acoustics of a room with walls.
The Dillinger Escape Plan — Ire Works (2007). The Warzone, Friday 19 June.
Also on the Friday Warzone: La Dispute (Michigan post-hardcore, the long shadow of Wildlife and Rooms of the House), Malevolence (UK heavy music, one of the most important British bands in the current metalcore spectrum), Ceremony (California hardcore, eighteen years of records that span powerviolence through gothic post-punk), Dying Wish, Point Mort, Die Spitz, Gridiron, Wake The Dead.
The Friday Valley gives Mastodon the headliner-length slot their catalogue demands. Crack the Skye (2009) remains the album that expanded the technical vocabulary of what heavy music could do structurally — the concept album about astral projection and Rasputin, the drum arrangements that made Brann Dailor the most discussed drummer in metal for a decade, the guitar work that operates on four independent registers simultaneously. The 2026 Mastodon set will draw from the full catalogue: the sludge of Remission, the oceanic metal of Leviathan, the prog of Crack the Skye, the more accessible The Hunter period, and the later records. Supporting them: Slift (French space-rock from Toulouse, one of the most significant French heavy exports of the last decade), Loathe (UK, the intersection of metal and ambient electronics), Torche (Miami, melodic sludge), Stoned Jesus (Ukrainian psychedelic rock, playing in 2026 with specific weight given the context of where they come from), Conjurer, Rezn, Yarostan, Dragunov.
Mastodon — Crack the Skye (2009). Friday Valley headliner.
The Friday Altar runs Blood Incantation in a prime slot. The Denver death metal band's trajectory from Hidden History of the Human Race (2019) to the ambient Timewave Zero (2021) and the recent return to dense, progressive death metal represents one of the most interesting individual artistic arcs in heavy music of the 2020s. Paul Riedl's riffs operate at the intersection of cosmic death metal and jazz chord theory in a way that makes Blood Incantation both technically demanding and surprisingly accessible for death metal. Also on the Friday Altar: Periphery (American progressive metalcore, eight-string guitars, Djent's most mainstream act), Decapitated (Polish technical death metal, their history carrying specific weight after the events of 2017 and the band's subsequent rehabilitation), Sylosis, Sinsaenum, Blood Red Throne, Crypta, Esodic, Impureza.
Blood Incantation — Timewave Zero (2021). Friday Altar.
The Friday Temple: The Gathering (Dutch metal, Mandylion and Nighttime Birds, the band that defined atmospheric metal fronted by women in the 1990s), My Dying Bride (UK Gothic doom, uninterrupted since 1990), Rotting Christ (Greek black metal institution, forty years of records), Carach Angren (Dutch symphonic black metal horror concept), Møl (Danish post-black metal), Einherjer, Ponte Del Diavolo, Killus, Mourir.
Saturday 20 June: Limp Bizkit, A Perfect Circle, Cavalera, and the Temple of Doom-Black
Saturday is the day with the widest internal diversity in the headliner tier — and potentially the most interesting cross-stage narrative.
Limp Bizkit headlining Mainstage 1 on Saturday represents both a legacy revival and a genuine puzzle. Fred Durst is sixty-two years old. Wes Borland is still the most visually arresting guitarist in the nu-metal lineage, operating in a zone between dadaist performance art and genuinely distorted blues. Still Sucks (2021), their first album in a decade, landed with more critical goodwill than anyone expected — it sounded like a band that had been away long enough to appreciate what it had, without the need to update the aesthetic in a way that would have revealed its age. The Hellfest crowd for Limp Bizkit will include people who were twelve years old in 1999 when Significant Other came out, and their children.
Limp Bizkit — Still Sucks (2021). Saturday headliner.
Also on Saturday Mainstage 1: A Perfect Circle (Maynard James Keenan's other band, the one that leans into restraint and melody rather than Tool's proggy aggression, Mer de Noms still holding up as one of the great debut albums of the early 2000s), Tom Morello (a solo set, which means The Nightwatchman acoustic material, some Rage Against the Machine and Audioslave reworks, and the particular political electricity of a Tom Morello guitar solo played in a field), Enhancer, Sidilarsen, House of Protection, Thornhill, Slay Squad.
Saturday Mainstage 2 is where the most historically resonant booking of the day lives: Cavalera "Chaos A.D." — Max Cavalera and Igor Cavalera performing their most important album in its entirety, as a formal act of reclamation.
Max and Igor Cavalera were the founding brothers of Sepultura, the São Paulo thrash-death band that became one of the defining metal acts of the late 1980s and early 1990s. Chaos A.D. (1993) was the pivot record: the album that moved Sepultura from pure thrash toward groove metal and world music influences, incorporating tribal percussion, coco rhythms, and protest politics into a sound that was genuinely new. Roots (1996), the follow-up, pushed the experiment further. Then Max left in 1996, Igor eventually followed, and for the next two-plus decades Sepultura continued without them while Max and Igor built separate careers.
The Cavalera brothers have been performing their Sepultura albums in their entirety for several years now — Roots in 2022, Beneath the Remains in 2023, Arise in 2024. Chaos A.D. in 2026, at Hellfest, is the entry in the chronology that probably has the most emotional charge: it is the album made in the period immediately before the fracture, the one that contains both the hunger of early Sepultura and the ambition of what they were becoming. Max's voice in 2026 is different from Max's voice in 1993 — rougher, more controlled — but the riffs don't care what year it is.
Also on Saturday Mainstage 2: Volbeat (Danish rock-metal hybrid whose aesthetic of rockabilly rhythms under heavy guitar has created one of the most devoted European fanbases in heavy music), Megadeth (in whatever current configuration Dave Mustaine has assembled — Megadeth have been touring consistently since the late 2010s resurgence, and The Sick, the Dying... and the Dead! from 2022 is their best album in a long time), Anthrax (the most consistently underrated of the Big Four, whose Among the Living is one of the three or four most important thrash albums ever recorded), and Crisix, Gatecreeper, Escuela Grind, Insanity Alert, LocoMuerte.
The Saturday Warzone: Hatebreed (Connecticut hardcore-metal crossover, Jamie Jasta is the living embodiment of the "I will show you what it means to suffer" tradition), Lionheart (California hardcore, the strain that mixes hip-hop influence with breakdown architecture), Kublai Khan TX (Texas metalcore, one of the most physically dangerous live acts in the American heavy underground), Cro-Mags (New York hardcore institution, The Age of Quarrel in 1986 defined the genre's intersection with metal), Trash Talk, Cancer Bats, King 810, Combust, False Reality. The Saturday Warzone is the day where the Warzone's dual identity — hardcore underground and Hellfest institution — is most concentrated.
The Saturday Valley: Cult of Luna (Swedish post-metal, the band that created the sound of glaciers moving over long periods, Vertikal and A Dawn to Fear are the essential records), Amenra (Belgian post-metal, the most devotional band in any genre, whose live performances function as ritual), The Young Gods (Swiss industrial rock, the band that invented the sample-as-instrument approach in the late 1980s and whose influence runs from Nine Inch Nails to Portishead), God Is an Astronaut (Irish instrumental post-rock, nineteen years of records with no diminishing returns), Pigs Pigs Pigs Pigs Pigs Pigs Pigs (UK noise rock, their name is the most accurate description of their volume), Psychonaut, Fange (French noise-doom from Rennes, aggressive in a way that owes as much to industrial music as to metal), BRUIT ≤ (French orchestral post-rock from Bordeaux, among the most distinctive voices in French heavy music), Cold.Capsule.
The Saturday Altar: Deicide (Glen Benton's Florida death metal band, one of the most consistent death metal discographies since 1990), Carcass (Liverpool death metal pioneers whose Surgical Steel comeback in 2013 remains the best argument for how to do a second act in extreme metal), Septicflesh (Greek death metal with symphonic architecture, one of the most visually arresting productions in death metal), Obscura (German technical death metal, the most technically proficient band in a genre defined by technical proficiency), Severe Torture, Defeated Sanity, Cabal, Profanation, Dvrk.
The Saturday Temple: Behemoth (Polish black metal institution, Nergal's project since 1991, whose The Satanist (2014) and I Loved You at Your Darkest (2018) are the albums that elevated extreme metal into a wider critical conversation), Old Man's Child (Norwegian black metal, the band Galder ran before joining Dimmu Borgir full-time), Aura Noir, Oranssi Pazuzu (Finnish cosmic black metal, psychedelic in the specific sense of music that rearranges your consciousness at the cellular level), Gaerea (Portuguese black metal, one of the most compelling recent additions to the black metal conversation), 1914 (Ukrainian black metal concept band, their subject matter — the First World War — carrying renewed weight given the context of modern Ukrainian history), Non Est Deus, Hulder, Vígiljós.
Behemoth — The Satanist (2014). Saturday Temple.
Igorrr — Spirituality and Distortion (2020). Hellfest's most unclassifiable domestic act.
Sunday 21 June: The Offspring, Acid Bath's Return, and the Resurrection of Louisiana Sludge
Sunday is the punk and metal day — and the day that contains the most emotionally charged reunion in the 2026 lineup.
The Offspring close the festival on Mainstage 1 on Sunday with a set that will inevitably centre on the records that made them: Smash (1994), Ixnay on the Hombre (1997), Americana (1998). Dexter Holland and Noodles have been running this band together since 1984, which means they have forty-two years of history to compress into a festival headliner set. Let The Bad Times Roll (2021) is their most recent album and gave them enough new material to balance against the classics. The Sunday billing is explicitly described as a "special punk rock day" — a curatorial decision that positions The Offspring as the conclusion of a day-long argument about where punk came from and where it went.
The Offspring — Let The Bad Times Roll (2021). Sunday closer.
Sunday Mainstage 1 supporting The Offspring: The Hives (Swedish garage-punk, Veni Vidi Vicious and Tyrannosaurus Hives are two of the most entertaining rock records of the 2000s, and live they are the most purely joyful band on this bill), Rise Against (Chicago punk-metal, the band that wrote the most earnest protest songs of the 2000s and hasn't stopped meaning it), Pennywise (California punk, thirty-five years of Bro Hymn), The Ataris (Indiana pop-punk, So Long, Astoria still sounds like being seventeen), The Bones, The Dwarves, Not Scientists.
Sunday Mainstage 2: Bad Omens (Virginia metalcore-rock, the band that has done more than anyone else in the last five years to bridge metalcore and mainstream rock radio), Architects (Brighton metalcore, their run from Holy Hell through For Those That Wish to Exist is the most compelling individual artistic evolution in British heavy music of the 2020s), Three Days Grace, Black Veil Brides, President, Resolve, Revnoir, The Funeral Portrait.
Sunday Warzone: The Adicts (British punk, the commedia dell'arte makeup, playing since 1975), Agnostic Front (New York hardcore, Victim in Pain, the founding document), Circle Jerks (Los Angeles hardcore punk, Group Sex, eleven tracks in fifteen minutes in 1980), Buzzcocks (Manchester post-punk, the band that wrote the most emotionally precise punk songs about being queer and confused and in love), Drain (Santa Cruz hardcore), End It, Maid of Ace, Karen Dió.
The Sunday Warzone and the Sunday Valley are in conversation on Sunday in a way that rewards thinking about them as a pair. One represents the punk end of the American underground; the other represents the sludge and doom end. They are connected by geography — New Orleans, specifically — in a way that makes Sunday the most regionally coherent day of the festival.
Down headlining the Sunday Valley is the reunion event that, before the Acid Bath announcement, was the most discussed Sunday story. Phil Anselmo (Pantera), Pepper Keenan (Corrosion of Conformity), Kirk Windstein (Crowbar), and Jimmy Bower (Eyehategod) first assembled Down in 1991 as a jam project, and when NOLA landed in 1995 it sounded like nothing else: a sludge-blues record that was slower and more deliberate than the thrash most of these musicians came from, haunted by Southern Gothic atmosphere, by the specific weight of New Orleans as a place where everything moves slowly and the ground is wet and the music is old. NOLA (1995) is on any serious list of the most important metal albums of the 1990s. Also confirmed for Sunday Valley: Corrosion of Conformity (performing without Keenan, who is in Down — the complicated geometry of overlapping supergroup memberships that define the New Orleans scene), Eyehategod (the sonic opposite of everything: slow, ugly, brilliant), Soilent Green, Black Tusk, Gnome, Alta Rossa.
Down — NOLA (1995). Sunday Valley headliner.
And then there is Acid Bath.
Acid Bath are on the Sunday Valley, and their presence there is the most emotionally loaded booking of the entire 2026 Hellfest. The band existed from 1991 to January 1997, when bassist Audie Pitre was killed in a car accident in Louisiana. He was twenty-six years old. The band released two albums in their lifetime: When the Kite String Pops (1994) and Paegan Terrorism Tactics (1996). Both are genuinely important records — the first one particularly, a sludge-death album whose artwork was sourced from Dax Riggs' own paintings, whose lyrics operated in a private vocabulary of Louisiana Gothic horror and tenderness, whose production was simultaneously raw and meticulous. They have been underground legends for nearly thirty years, the kind of band that gets cited as a formative influence by almost every significant sludge and doom act of the last two decades.
Dax Riggs hasn't played live with Acid Bath since 1997. The reunion process started in late 2024 and came to its first public fruition at Sick New World in Las Vegas in April 2025. The current lineup brings back original members including Dax Riggs, Sammy Duet, and Mike Sanchez, with Zack Simmons (Goatwhore) on drums and Shane Wesley (Crowbar) on bass filling the positions left open by the original members who were unable or unwilling to return. In interviews given ahead of the 2025 shows, Riggs described the reunion as "a beautiful thing to be a part of" — careful language, the language of someone who knows that the weight of what happened in 1997 is present at every show.
The Hellfest Sunday Valley slot positions Acid Bath in a landscape that knows exactly who they are. The audience in front of that stage will contain people who have been waiting since 1997, and people who discovered the band through When the Kite String Pops in the years since. Both groups understand what that set means.
Acid Bath — When the Kite String Pops (1994). The return.
Sunday Altar: Napalm Death (Birmingham grindcore founding institution, Barney Greenway and Shane Embury still carrying the lineage of the two-second You Suffer and the long shadow of Scum), Possessed (San Francisco death metal, the band that coined the term death metal via Seven Churches in 1985, Jeff Becerra's story of surviving a shotgun wound to make Revelations of Oblivion in 2019), Six Feet Under (Florida death metal, Chris Barnes, the band that essentially invented groove death metal), Suicidal Angels, Fulci, Sublime Cadaveric Decomposition, Bloodstain, Tempt Fate.
Sunday Temple: Mayhem (Norwegian black metal, the band around which all the mythology — Euronymous, Dead, the church burnings, the murder — accumulates, and whose musical legacy is genuinely independent of the mythology: De Mysteriis Dom Sathanas (1994) is a formally important record), Marduk (Swedish black metal, the most relentless production rate in the genre), Wolves in the Throne Room (Washington state black metal, the band that took the Norwegian tradition and filtered it through American Pacific Northwest environmentalism), Gehenna, Scour, Thy Light, Midnight Odyssey, Silhouette.
The Mud Lore: What It Means to Be in Clisson When the Sky Opens
Hellfest has a mud tradition that is not metaphorical. The Loire-Atlantique in late June is capable of delivering several seasons of weather in a single day, and the festival site — however much concrete has been laid in its twenty editions — still has enough grass and soil to become treacherous when it rains at volume.
The foundational mud event is the 2007 edition, which remains the most referenced weather catastrophe in the festival's history. Rain arrived on an already-saturated site and transformed the grounds within hours. Tractors brought hay bales to absorb the worst of it; the main stage sound system failed at one point; festival-goers reported sinking to the ankle and beyond in the areas between stages. That 2007 edition was also the festival's financial recovery year — Barbaud had programmed Slayer, Korn, Megadeth, and Dream Theater specifically to repair the deficit from the 2006 inaugural loss — and the combination of commercial pressure and extreme weather produced an atmosphere that attendees describe with the specific pride of shared suffering.
The counter-argument to the mud history is that Hellfest has invested significantly in site infrastructure in the years since 2007: drainage improvements, additional tarmac corridors, the elevated wooden walkways that now connect stages in the areas most prone to waterlogging. The site has handled subsequent rain better than it handled 2007. But the mud year is part of the mythology, the way Woodstock's mud is part of that mythology: it proves that the people who came were serious, that they were there for the music rather than the comfort.
The other piece of Clisson lore that every first-time visitor needs to understand is the town itself. Most European festivals exist in some degree of isolation from the nearest population centre — fields, former quarries, farmland. Hellfest is different: it uses the entire town. The medieval city centre is decorated and themed for the festival duration. The Clisson cathedral and the ruins of the Château de Clisson, visible from the festival site across the river, become backdrop rather than obstacle. Restaurants that would normally be closed on a Tuesday open for the festival week. The market is replaced by metalheads. The whole thing is a negotiated occupation — Hellfest and Clisson have reached a working arrangement that is unusual in the festival world, because the town has accepted what it is and built its identity around being the place where this happens.
Festival Forecast: Who Joins Whom and Why
None of the following is confirmed. The festival hasn't announced special appearances and historically doesn't until they happen. What follows is informed speculation presented as such.
The Tom Morello × Limp Bizkit scenario. Both acts are on Mainstage 1 Saturday. Tom Morello is the guitarist most associated with the era that produced Limp Bizkit's commercial peak — Rage Against the Machine's Evil Empire (1996) and The Battle of Los Angeles (1999) ran parallel to Significant Other and Chocolate Starfish. The Bizkit–RATM axis is part of late-1990s nu-metal/alt-metal history in a way that doesn't quite survive the standard genre distinctions. A Morello appearance during the Limp Bizkit set — even a single song, even a cameo — would be the most obvious Mainstage 1 Saturday moment. Both camps are aware of the other's presence. The logistics are trivially simple. It would be the set's peak.
The Down × Eyehategod × Acid Bath triangle, Sunday Valley. Three of the most important bands from the New Orleans heavy underground are playing the same stage on the same day. Phil Anselmo has a documented history of spontaneous guest appearances — he has shown up in Eyehategod sets before (the two camps' careers have overlapped since the early 1990s), and the Acid Bath reunion specifically involves Mike Sanchez and Sammy Duet, who played in bands with Eyehategod and Crowbar members across the years. A Sunday Valley where at some point in the afternoon someone from Down or Acid Bath wanders into another act's set — or where multiple New Orleans veterans share a stage for even one song — would be the most historically resonant moment of the festival. The New Orleans sludge scene has always operated as a collective rather than a set of competing individual projects; Sunday Valley in 2026 is as close as that collective has been in one place in twenty years.
The Dillinger Escape Plan × La Dispute Friday Warzone scenario. La Dispute and The Dillinger Escape Plan have occupied related but distinct lanes within the post-hardcore and mathcore ecosystem for years. Jacob Boleer (La Dispute's vocalist) has cited DEP's influence explicitly. Both are Warzone on Friday. The most plausible version of this is La Dispute covering a DEP track or inviting a member for a brief guest appearance — less plausible than the New Orleans Valley moment, but in the logic of the Warzone's collective identity, not absurd.
The Mastodon × Blood Incantation Valley chemistry. Both acts play Friday Valley. Mastodon have been experimental in their late-career phase in ways that bring them closer to Blood Incantation's cosmic-death territory than their early sludge work suggested. A mutual acknowledgement — Mastodon playing a Blood Incantation track, or the inverse — is unlikely but structurally interesting.
The Cavalera × Sepultura history moment. Sepultura are on Friday Mainstage 2. The Cavalera brothers are on Saturday Mainstage 2. They play on consecutive days. They will almost certainly not share a stage given the decades of documented tension, but the symbolic weight of the two entities occupying the same festival in consecutive days is noted.
The French Metal Acts: Ultra Vomit's Mainstage Moment, Igorrr's Structural Importance, and What BRUIT ≤ Represent
One of Hellfest's consistent commitments is programming French metal acts alongside the international names — a reflection of both the organiser's roots and the FASAP (Fonds de soutien à l'action pour le spectacle) funding conditions. In 2026, four French acts represent distinct phases of French heavy music.
Ultra Vomit (Mainstage 1, Friday) are the most unexpected French act in a headliner-adjacent position in the festival's history. They are a parody metal band from Nantes — metal in the humorous mode that Spinal Tap explored and Alestorm occupies the northern European wing of, but more technically proficient than either, and with a specifically French sense of absurdist humour that doesn't translate cleanly into English. They've been playing metal parodies of other metal genres since 1999, and their Hellfest slot — on the same stage as Iron Maiden — represents twenty-seven years of being the exact right kind of weird at the right festival. The crowd for Ultra Vomit on Friday at Hellfest will be, proportionally, among the most devoted of the weekend.
Igorrr (Mainstage 1, Thursday — on the Altar) is Gautier Serre's project, and it represents the furthest stylistic point from what most people mean when they say "metal festival act." Igorrr is breakcore, baroque music, death metal, chicken sounds, Renaissance counterpoint, and electronic production assembled by someone with genuine technical knowledge of all those traditions. Spirituality and Distortion (2020) is the essential record: "Downgrade Desert," "Nervous Waltz," "Kung-Fu Chèvre" — these are titles that are accurate descriptions. Igorrr occupies a unique position in French music: too experimental for mainstream metal, too metal for experimental music, beloved by both.
Slift (Valley, Friday) are the Toulouse space-rock band whose Ummon (2020) and La Planète Inondée (2022) have made them the most internationally recognisable French heavy psych act. They are not technically metal, but they are heavy in a way that makes the Valley their natural habitat. The French psych scene they emerged from — connected to labels like Stolen Body Records and the broader European space-rock ecosystem — has produced a wave of bands in the last decade that Slift have surfed most visibly.
BRUIT ≤ (Valley, Saturday) are the Bordeaux orchestral post-metal band whose Le Poème Harmonique (2021) and 𝛥 (2023) are among the most ambitious records in the French heavy underground. They use orchestral arrangements, post-rock song structures, and extreme metal dynamics in a way that is self-consciously European — rooted in the French classical tradition in a way that gives their music a different character than British or American post-metal.
Fange (Valley, Saturday) are the Rennes noise-doom band whose aesthetic owes as much to industrial and noise music as to metal — they sit in the space between Godflesh and French industrial noise, and their live sets are among the most intense in the French heavy underground.
Why 2026 Is the Edition That Defines the Decade
Hellfest 2026 carries more narrative weight than most editions. The Iron Maiden 50th anniversary gives Friday a historic anchor. The Acid Bath reunion gives Sunday a genuinely emotional core. The Dillinger Escape Plan's return gives Friday Warzone a historic dimension. The Cavalera Chaos A.D. performance gives Saturday Mainstage 2 a formal completeness that it wouldn't have had otherwise.
But the deeper argument for 2026 is structural. After twenty editions, Hellfest has achieved something that almost no other festival of its scale has managed: genuine genre coherence across the full range of what it programs. The Warzone's punk-hardcore tradition is intact. The Valley's doom-stoner identity is intact. The Temple's black metal identity is intact. The Altar's death metal identity is intact. And the mainstages accommodate both Iron Maiden's fifty-year legacy and Bring Me the Horizon's 2024 record without those two things cancelling each other out.
That is an editorial achievement, not just a commercial one. Ben Barbaud took a family rock festival in a Loire-Atlantique wine town and turned it into an institution. The wine estate with the castle ruins and the Lemmy mausoleum is, in 2026, the setting for some of the most historically significant heavy music performances of the year. Clisson will have a population of approximately 248,000 people for four days in June. Most of them will be covered in at least some mud. All of them will know exactly why they came.
Sources
Hellfest 2026 official lineup: hellfest.fr/en/news/hellfest-2026-lineup (November 2025)
Hellfest 2026 full lineup update: hellfest.fr/en/news/hellfest-2026-lineup-update
Full lineup by stage and day: sortiraparis.com, "Hellfest 2026: The Full Lineup and Schedule by Stage"
Iron Maiden Run For Your Lives World Tour: en.wikipedia.org/wiki/Run_for_Your_Lives_World_Tour; noise11.com, "Iron Maiden Reveal Run For Your Lives Setlist," May 2026
Acid Bath reunion details: metalinjection.net, "Dax Riggs Explains How Acid Bath's Reunion Came To Be"; blabbermouth.net, "Dax Riggs Opens Up About Acid Bath Reunion," 2025; brooklynvegan.com, "Acid Bath reunite, Dax Riggs announces new solo LP"
The Dillinger Escape Plan European tour: lambgoat.com, "The Dillinger Escape Plan share European touring plans for this summer," 2026; hellfest.fr/en/artist/the-dillinger-escape-plan-1
Cavalera "Chaos A.D." tour: blabbermouth.net, "Max and Igor Cavalera to Perform Sepultura's Chaos A.D. in Entirety"
Hellfest founding history: ina.fr, "Ben Barbaud, celui à l'origine du Hellfest"; sumayeelen.com, "Hellfest: de ses origines à aujourd'hui"
Warzone stage history and Lemmy mausoleum: hellfest.fr/experience; Hellfest 2025 Warzone review, culturemetal.com, July 2025
Hellfest 2007 mud events: agoravox.fr, "Hellfest 2007: l'enfer et le paradis"; moonlight-stories.com, "Hellfest 2007 @ Clisson"
Bring Me the Horizon, POST HUMAN: NeX GEn: open.spotify.com/album/1k7OXnGQPV4zF3seDwRroD
Iron Maiden, The Number of the Beast: open.spotify.com/album/1eNQWWDcjDNy6cpUlv1gfK
Limp Bizkit, Still Sucks: open.spotify.com/album/2lZ9RqGnGXH8gtH3DK02tJ
The Offspring, Let The Bad Times Roll: open.spotify.com/album/0wHDdwLUroXgyW2xnQKOeo
Mastodon, Crack the Skye: open.spotify.com/album/2cyPixuhzJiiOzTClfodlN
Acid Bath, When the Kite String Pops: open.spotify.com/album/7GFYpb7GvKZZcPTze1uAp8
Behemoth, The Satanist: open.spotify.com/album/7l0L2YHlQwAyI4QyZTIWGS
The Dillinger Escape Plan, Ire Works: open.spotify.com/album/65ai7QRrruWGNPcVU23PgD
Blood Incantation, Timewave Zero: open.spotify.com/album/6MGQlAscBNKcBRX3VqkrvZ
Down, Nola: open.spotify.com/album/04BvRPJwuDeuJ3DhbAw9Wg
Igorrr, Spirituality and Distortion: open.spotify.com/album/4hl7ryP7L1SvblrcPRAkpQ