on a trip to London back in the mid/late 80s, I saw bits of a horror movie, it was running on some movie channel but I never saw the whole thing.

Anyway... I have wondered for a loong time now what that movie was, but I can only remember _one_ scene from the movie: It was a dungeon-like enviroment and a guy is standing between two pillars or between stone walls, and he rips his own flesh from his body until he's just a skeleton. This is the only think I remember from the movie... I know it's a longshot but hopefully some of you out there knows what movie it is...