Philadelphia post-metal project whose name pairs mortality with the tranquil shore. Atmospheric heaviness that finds darkness in beauty.

Philadelphia progressive/post-metal project named for the Alaskan ski resort. Crush blends soaring, atmospheric passages with crushing heaviness in the Isis and Russian Circles tradition.

Pittsburgh's Barren Plains are an instrumental post-metal project that emerged in 2025, joining a city with deep roots in heavy music by crafting atmospheric, wordless compositions in the post-metal tradition.

Broughton's Rules is a Pittsburgh, Pennsylvania instrumental post-rock and math rock band founded in 2009 by members including guitarist Jeff Ellsworth, formerly of Don Caballero and Blunderbuss. Their debut album Bounty Hunter 1853, released on Relapse Records in 2010, was praised for blending heavy post-rock, Krautrock, and Morricone-influenced guitar work, with the band explicitly distancing themselves from technical math rock conventions in favor of song-first composition. Their instrumental approach positions them at the intersection of Don Caballero's angular math formalism and the more atmospheric textures of post-metal.

Philadelphia's Cave Weta build massive post-metal structures from sludge-soaked riffs, channeling the patient heaviness of Neurosis and Isis into slow-burning, emotionally corrosive soundscapes.

Philadelphia's Monsters Eat People formed in 2018 and pursue a progressive/post-metal blend characterized by sprawling song structures, dynamic contrasts, and the atmospheric density that the Philly underground has cultivated for decades.

Pittsburgh's Pyrithe work in the corrosive overlap of experimental sludge, post-metal, and noise rock, building structures that are architecturally dense and abrasive, reflecting the industrial weight of their city while pushing well past genre comfort zones since 2018.