Underdark are a British black metal band from Nottingham, England, formed in 2015 by guitarists Ollie Jones and Adam Kinson and drummer Dan Hallam.

Their current lineup consists of Jones, Kinson, bassist Stephen Waterfield, vocalist Abi Vasquez and drummer Dan Blackmore.

Underdark were formed in 2015[1][2] when guitarists Ollie Jones and Adam Kinson (of Statutes) approached drummer Dan Hallam (of Castaway) about the possibility of starting a black metal band "similar to Deafheaven with scream influences such as Envy".

[2] Hallam said that Underdark's music started off as "purely Deafheaven and Envy worship", and that they gradually began incorporating post-rock and post-metal-influenced textures into their songwriting to make it "grander".

[3] In 2016, the band self-released their debut extended play (EP), Mourning Cloak, which was later distributed through the DIY record labels Adorno, Slime Citadel, Third-I-Rex and Sell Your Soul.

[1] Vasquez first met most of Underdark's members whilst she was working as a booking agent in Leicester; Hallam had also played shows with Yuri when he was in an emo band.

[10][11] On 30 October 2020, the band released a limited edition cassette single, featuring a cover version of The Cure's "Plainsong" and a re-recording of Mourning Cloak track "With Bruised and Bloodied Feet", as a way of introducing Vasquez and the direction of their forthcoming debut album to the public.

[11][13] Our Bodies Burned Bright on Re-Entry was finally released on 30 July 2021,[14] and was distributed by three record labels; Surviving Sounds in the United Kingdom, Through Love in Europe and Tridroid in North America.

[39] In December 2024, Our Bodies Burned Bright on Re-Entry was reissued through Church Road, which Underdark promoted with the release of a live music video for "Coyotes".

[32][45] The band's musical influences include Alcest, City of Caterpillar, Dawn Ray'd,[9] Deafheaven, Deftones, Envy, Mogwai, This Will Destroy You,[7] Cradle of Filth and Weakling.

[7][10] Jones said that Vasquez's lyrics are heavily influenced by J.R. Hayes (Pig Destroyer) and Patrick Kindlon (Self Defense Family and Drug Church).

[25] The writing of Our Bodies Burned Bright On Re-Entry was more "fragmented" and personal than her previous output, addressing the attempted suicide of one of her close friends, her struggles with drug addiction, the Mexico–United States border, the Grenfell Tower fire and her fears of burnout.