A doom and sludge metal band from Portland, Oregon, Moan channel the Pacific Northwest's grey skies and isolation into suffocating, slow-motion heaviness. Active since 2020, they operate in the low-and-slow register where riffs drag like sediment and atmosphere is as important as volume.

Chicago's Mobius Chair approach atmospheric sludge metal through a conceptual, science-fiction lens — the project frames itself as a journey to the red rectangle nebula, giving the slow, heavy riffing a strangely cosmic dimension. Formed in 2021, they bring an unusual narrative ambition to Chicago's underground heavy scene.

Baltimore's Mobula have been navigating the psychedelic end of sludge and doom since 2016, layering heavy riffs with acid-washed, hallucinatory textures that set them apart from the rawer side of their genre. Their sound draws as much from cosmic rock as from the Chesapeake's notoriously thick heavy underground.

West Palm Beach's Moguera channel the oppressive weight of sludge into long-form post-metal compositions, letting their doom-laden South Florida sound breathe and collapse under its own mass. Their approach since 2016 favors atmosphere and crush over any impulse toward accessibility.

Baldwin Park, California's Moldering Vibration drag sludge metal's thick, distorted hostility through the blasting chaos of grindcore, arriving somewhere ugly and cathartic in the process. A young band formed in 2021, they bring a caustic edge to the Los Angeles area underground.

Boston's Mollusk combine the crushing weight of sludge with the suffocating drag of doom metal, creating music that feels appropriately deep-sea and oppressive. Formed in 2020, they've found their place in Boston's storied heavy music underground with a sound that's slow, heavy, and deliberate.

Formed in 2025 in Birmingham, Alabama — a city with deep roots in heavy music — Molten Valley deal in the slow and suffocating intersection of doom and sludge metal, dragging riffs through tar-thick tempos and oppressive atmosphere.

Richmond, Virginia's Monarch operate in the sludge and doom space, turning out the kind of slow, feedback-drenched heaviness that fits naturally in a city with a long history of underground heavy music, active since 2014.

Based in Mission, Texas in the Rio Grande Valley, Monodyssey bring a heavy sludge metal sound to a region not typically associated with the genre, grinding out thick, abrasive riffs since forming in 2022.