Wichita, Kansas sludge metal outfit active since 2012, pouring out thick, tar-slow riffs and a suffocating low-end that commands patience from the listener in exchange for genuine weight. Wichita's isolation from major metal centers seems to have only concentrated their sound.

Portland blackened sludge and doom metal outfit formed in 2014, fusing the corrosive atmosphere of black metal with the slow, crushing heaviness of sludge and doom in a combination that the Pacific Northwest underground has proven particularly fertile ground for cultivating. Their sound is dense, dissonant, and deliberately oppressive.

Prestonsburg, Kentucky's The Splitting fuse the corrosive weight of sludge metal with death metal's brutality, producing something rawer and more rural-feeling than the polished end of either genre. Active since 2015, they belong to the Appalachian underground where heaviness is measured in density and slow punishment.

Out of Wilkes-Barre, Pennsylvania, The Virgos drag gothic atmosphere through sludge and stoner terrain — slow, heavy riffs coated in dark, moody texture that owes as much to Type O Negative's gloom as it does to Sleep's monolithic low end.

Atlanta's The Voltage Cult have been fusing groove metal's rhythmic swagger with the slow, toxic heaviness of sludge since 2013 — a combination that gives their riffs both Southern grit and a suffocating, low-end weight.

Detroit's The Watchers merge the corrosive weight of sludge with windswept atmospheric black metal, building bleak, layered soundscapes that reflect the industrial grimness of their city — a project that has been refining this collision of extremes since 2016.

Blistering Thrash / Sludge Metal out of Texas.

Seattle's Theist have been conjuring a layered, oppressive amalgam of black metal, sludge, and doom since 2015 — a combination that fits naturally in the Pacific Northwest's tradition of slow, heavy, and atmosphere-saturated extreme music. Their sound buries raw black metal hostility under sludge's tar-thick weight and doom's relentless drag.

Brooklyn's Thera Roya traffic in heavy, slow-burning sludge and post-metal, building suffocating walls of sound from a base in New York City's underground scene since 2013. Their music favors atmosphere and weight over speed, with extended compositions that grind and drift in equal measure.