After more than half a century, the Dyatlov Pass Incident looks to be the world's most uncrackable unsolved cold case. Nine mountain climbers died, leaving a strange and unsettling scene which has puzzled investigators. An unknown force pummeled three of them to death, while the other six died of hypothermia. While the speculation run from native uprisings to secret Soviet radiation experiments to UFO attack, the events probably have a more mundane explanation - we just don't know what the hell it is.
