Moving Rocks (S01E05)

In Death Valley, rocks and boulders seem to glide across the landscape independently. Is there a scientific explanation for this bizarre and seemingly unexplainable occurrence? Meanwhile, North Carolina’s Brown Mountain boasts a peculiar light display that has puzzled many. With various theories in play, can science uncover the truth behind these mysterious glowing orbs? Additionally, in the isolated mountains of Northern Mexico, local tribe members are renowned for their ability to run barefoot over distances that far exceed a marathon. Can science shed light on the secret behind their extraordinary endurance?