A death metal act from Newhall, California active since 2012, Montezuma operate in the Los Angeles underground with the punishing directness the genre requires — heavy, methodical, and uninterested in subtlety.

San Francisco's Monuments Collapse have been working the sludge/doom/post-metal axis since 2013, building lengthy, corrosive tracks that mirror the Bay Area's tension between beauty and decay — slow, caustic, and hauntingly cinematic.

One of the longer-running black metal acts in Southern California, Santa Ana's Mordor have maintained their dark vision since 1994 — an impressive run for the Los Angeles area underground. Their name, drawn from Tolkien's realm of shadow, anchors them in the mythological and fantastical tradition of early European black metal.

Orange County, California's Morgion are one of the most respected names in American doom/death metal, crafting deeply melancholic and atmospherically dense music since the early 2000s. Their slow, crushing compositions draw from the European tradition of My Dying Bride and Paradise Lost while maintaining a distinctly West Coast weight.

Los Angeles doom and sludge metal act Mourn (not to be confused with the Tennessee project sharing the name) drag their heaviness through a thick layer of Southern California nihilism, building slow, corrosive compositions rooted in the sludge tradition. Formed in 2015, they add another bleak and unrelenting entry to LA's well-populated heavy underground.

Santa Rosa, California's Mournful Cries marry the crushing tempos of doom with the melodic vocabulary of traditional heavy metal, crafting songs that carry a brooding emotional weight alongside genuine riff craftsmanship.

Corona, California's Mourning Star specialize in epic doom metal of the grand, theatrical variety — slow-burning compositions built on massive riffs, dramatic pacing, and a sense of ancient, mythic weight.

A San Francisco death-doom project born in 2025, Mudslinger buries melody beneath layers of grinding low-end, pairing cavernous death metal brutality with the suffocating crawl of doom.

Oakland's Noothgrush have been a cornerstone of American sludge and doom since 1999, trading in down-tuned riffs of almost geological weight and tempos that drag like tar. Their approach pulls from the misery of early Eyehategod and the funeral pacing of traditional doom, forging a sound that feels less like music and more like a slow, deliberate punishment. Decades on, they remain one of the most revered names in the West Coast sludge underground.