Out of Layton, Utah since 2008, Septic Baptism have spent nearly two decades building suffocating walls of sludge and doom from the high desert. Their music moves at a glacial, punishing pace, drawing equally from the corrosive weight of sludge and the mournful slow-burn of traditional doom. They are one of Utah's most enduring heavy underground acts.

Minneapolis sludge metal outfit Serac have been at work since 2015, channeling the cold, bleak energy of the upper Midwest into slow, crushing riff structures. Their music bears the weight of extended instrumental passages and a commitment to atmosphere that sets them apart within the dense Minneapolis heavy music scene. Named after the unstable ice formations that precede glacier collapse, their sound evokes that same slow-building, inevitable devastation.

Seven Sisters of Sleep is a sludge and doom metal band from Southern California, formed in mid-2009 from members of Tafkata and The Arm and Sword of a Bastard God. The band built their sound on a foundation of occult-themed, downtuned sludge drawing from doom, death metal, black metal, and d-beat, releasing records on A389 Recordings and Southern Lord, among others. They released multiple full-length albums before disbanding following legal troubles involving a former member, leaving behind a body of work regarded as important within the Southern California heavy underground.

Severer is a Lafayette, Louisiana doom and sludge metal band formed in 2015, drawing naturally on the heavy, humid atmosphere that has made Louisiana a breeding ground for miserable, crushing music. Their sound channels the slow-burn punishment of sludge alongside the weighted despair of traditional doom, firmly rooted in the Gulf Coast underground.

Hershey, Pennsylvania's Shadow of the Black Pyramid are a sludge metal project formed in 2023, dragging down-tuned, filth-caked riffs through swamplike tempos with the slow menace the genre demands. A young band still defining their corner of the Pennsylvania underground.

Named with a nod to Gene Wolfe's science fantasy, Seattle's Shadow of the Torturer meld the slow-building menace of doom, the sludge of the Pacific Northwest underground, and death metal's terminal weight into a sound as bleak and relentless as the city's winters. Active since 2012, they've built their craft within one of America's richest heavy music scenes.

Birmingham, Alabama's Shallow Black emerged in 2022 playing sludge and doom metal that carries the tradition of Southern heavy music through a particularly thick and miserable lens. Their approach connects to the long lineage of Southeastern sludge, channeling slow-moving, pitch-black riffs with an uncompromising heaviness.

Olympia, Washington's Shalva take sludge metal into the Pacific Northwest's long tradition of atmospheric heaviness, playing music as grey and waterlogged as the region's winters since 2016. Their sound is dense and unrushed, with the kind of slow-burn weight that rewards patient listeners willing to sit inside the drone.

Urbana, Illinois atmospheric sludge and post-metal band formed in 2017, crafting slow-building, heavily textured compositions where drone-like weight meets expansive post-rock dynamics in equal measure.