Racetrack Playa, a desert lake bed in the mountains above California's Death Valley, where stones were known to move overnight leaving enigmatic trails Photo: Alamy
I have an Erik von Daniken book from the 70s (I am huge fan of paranormal and supernatural phenomena trends and the like, but don’t believe the bullshit) that mentions this theory as the most plausible. Ho-hum. This crap comes up every few years, and no one seems to recall how far back it goes and how simple the explanation is. Still, thanks for Fortean post. Keep them coming.