New York's MKDelta blend hardcore sludge and doom into a punishing, slow-grinding sound that leans on suffocating riffs and bleak atmosphere. Formed in 2022, the band describes their music as something that will make you want to quit your job — a fair warning for the faint-hearted.

Columbia, South Carolina's MNRVA traffic in the overlapping territories of doom, stoner, and sludge metal, building slow-burning riff structures with a hazy, sun-baked weight. Founded in 2023, the band carries on the Southern tradition of heaviness as a physical, almost geological force.

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.

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.

Pittsburgh's Molasses Barge live up to their name with heavyweight doom metal that moves with the deliberate, unstoppable momentum of something enormous and slow. Active since 2011, they've built their reputation within Pittsburgh's consistently strong heavy underground.

Pittsburgh's Mold Farmer blend the fuzz-soaked riff worship of stoner metal with the funeral pace of doom, cultivating a sound that's both hazy and heavy in equal measure. Since 2019 they've added another layer to Pittsburgh's already rich tradition of slow and heavy music.

Toledo, Ohio's Mold Golem work at the crossroads of heavy and doom metal, crafting riff-driven material that draws from traditional metal foundations while leaning into darker, slower territory. Formed in 2019, they represent Toledo's quieter but genuine contribution to the Midwest heavy music scene.

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.