They've been called the Sailing Stones of Death Valley and mystified people for over a century. Essentially, large boulders were found over the years to move significant distances while leaving telltale tracks in their wake. But no other evidence existed near the stones to identify how they moved or what moved them.

And then a couple of scientists went and ruined the mystique for everyone with their witchcraft "moving picture boxes" that captured the whole thing in action. Essentially, the land would freeze over and surface water beneath the rock allowed it to move and slide. Well, their video in conjunction with the GPS tracking aids (because the rocks were prone to just disappearing on their parole officer) killed the mystery definitively.