One of my early Bandcamp favorites which still holds up is Omega Massif's Geisterstadt from 2007. The esteemed Full Metal Attorney explains that
"though these guys sound like Isis, they clearly let the "sludge" take precedence over the "post". It's heavy and (despite being instrumental) engaging music. They show a willingness to break the rules with atonal chords and such, with the intelligence to do it well".According to Omega Massif's last.fm page Geisterstadt tells of "ancient abandoned silver mines, treks through deep mountain tunnels, and forsaken boom towns". My favorite track is "Unter Null", which Invsisble Oranges described as
"droning, peaceful guitar that is gradually undermined by sporadic dissonance. By song’s end, guitars spin and echo above the rhythm section with such intensity that they evoke air raids and nuclear fallout".