One of the lesser known early krautrock bands was Gila. Their leader and guitarist Conny Veit doubled in Popol Vuh for a while and this left its marks. In fact, the second Gila album Bury My Heart At Wounded Knee (released 1973) features nearly the same line up as Popol Vuh in those days, with Veit, Florian Fricke on piano and Daniel Fichelscher on drums and bass. The fourth member was Veit's singing girl friend Sabine Merbach.
You can listen to the full album above.