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Sheffield’s Underdark are set to bring their harrowing, emotionally charged take on post-black metal to The Castle, Luton this November. Fusing the bleak intensity of black metal with the weight of doom and the atmosphere of post-rock, their live shows are as cathartic as they are crushing. Expect towering walls of sound, searing vocals, and moments of unexpected beauty. Saturday 29th November 2025 — don’t miss one of the UK’s most vital extreme acts in an intimate setting.