Here's a piece of frightening and downright disturbing psychedelic rock from 1969 from the little known band Cromagnon. This is like a lysergic cross between the industrial metal of Skrew and the highly experimental and fried acid rock of The Red Crayola. This song is very apocalyptic sounding and one of my favorites. Here it is, Cromagnon's "Caledonia". It appears on their album "Orgasm". Well worth checking out. The homemade video is very impressive and suits the song perfectly. Enjoy.