I know naff all about these guys, but I randomly listened to this
http://www.last.fm/music/Popol+Vuh/_/Listen+He+Who+Ventures?autostart
and it's awesome! I thought they were some electroniccy type band but this is all piano and some sort of guitar thing and some bass. And it's heavy stuff! If you like Bohren & The Club Of Gore or the newer Earth stuff this track may well be a winner.

If anyone would care to volunteer some info about these guys (I know they did music for some Werner Herzog films but that's it) that would be cool!