Portland, Oregon's Mouth of Maggots deal in the uglier, filthier end of sludge metal — corrosive, feedback-soaked, and rooted in the Pacific Northwest's deep tradition of heavy, noise-informed extremity.

Crushing Sludge / Doom Metal out of Texas.

Mesa, Arizona's Mouthbreather have been crafting heavy, oppressive sludge and doom metal since 2012, pairing abrasive textures and deliberately sluggish tempos with a raw energy native to the Southwest's underground heavy music community.

Fayetteville, Arkansas' Mud Lung have been churning out slow, tar-thick sludge and doom since 2013, with a sound that captures the oppressive humidity and isolation of the Ozarks in layers of distorted feedback and downtuned misery.

Virginia Beach veterans Mugwart have been grinding out sludge and stoner metal since 2003, building a reputation on thick, fuzzed-out riffs and the kind of slow-burn heaviness that rewards patient listeners.

Portland, Maine's Mugwort is a sludge-doom project that trades in oppressive atmosphere and crawling tempos, reflecting the cold, isolated quality of the Northeast in every slow, crushing note.

Lancaster, Pennsylvania's Mule Thrower arrived in 2021 with a sludge-doom sound as stubborn and heavy as their name implies — slow, punishing, and built on the kind of oppressive riffing that demands physical submission.

Portland, Oregon's Mursa channels the city's deep well of heavy music into caustic sludge metal built on slow, punishing riffs and abrasive texture. Active since 2013, the band embodies the grimy, feedback-laden aesthetic that defines the Pacific Northwest's harder underground.

Baltimore, Maryland's Musket Hawk mash grindcore's explosive brevity against the tar-thick riffs of sludge metal, producing something uglier and more chaotic than either genre alone would permit. Since 2013, they've been a fixture in Baltimore's exceptionally fertile heavy music underground.