Denver's Skully Mammoth have been hauling sludge metal's tar-slow riffs through Colorado since 2011, channeling the suffocating heaviness associated with acts like Eyehategod and Crowbar. The band builds around massive, deliberate tempos and a tone that sounds like it's been dragged through miles of mountain grime.

Le Claire, Iowa's Sky Hunter formed in 2009 along the Mississippi River and deal in the slow-burn convergence of sludge and post-metal — long-form songs built on distorted heaviness that gradually opens into something more expansive and atmospheric. Their Midwest setting lends a particular isolation and bleakness to the material.

Sacramento's Sky Pig have been combining stoner, sludge, and doom metal since 2018, trafficking in slow-grinding riffs soaked in fuzz and feedback that nod equally to Electric Wizard and Saint Vitus. The band occupies the fertile Central Valley heavy underground, where volume is treated as a virtue unto itself.

Slag Fairy are a New York sludge metal band formed in 2018, building their sound around the thick, feedback-laden density that defines the genre — slow, punishing riffs dragged through distortion and noise. The name alone signals a fondness for the absurd and heavy in equal measure.

Slag Hive are a Bellingham, Washington band formed in 2023, combining the murky weight of sludge metal with the aggression and downtuned riff work of death metal into something deliberately dense and putrid. The Pacific Northwest's damp, industrial underbelly shows in their sound.

Slaghead are a Hampton, Virginia progressive sludge metal band formed in 2017, layering complex song structures and dynamic shifts over the heavy, slow-burning foundations of sludge. They bring a more compositionally ambitious approach to a genre often defined by raw simplicity.

Massive Sludge / Groove Metal from Austin.

Rockford, Illinois's Slave Cylinder combine sludge metal's filth and doom metal's glacial weight into something that feels built for the post-industrial grimness of their Midwest home since 2015. Their Bandcamp handle ties their identity firmly to their Illinois roots.

Pittsburgh's Slaves BC have carved out a distinctly abrasive niche since 2016, merging the misanthropic atmosphere of black metal with the weight of sludge and the raw fury of hardcore. Their music captures the grime and desperation of urban decay filtered through a relentlessly dark lens.