That one mystery you always wanted to know about.

If you could have one Mystery solved what would it be and why.

For me it would have to be the Dyatlov Pass incident, just fascinating, I would love to know what happened that cold cold night in Russia.

http://en.wikipedia.org/wiki/Dyatlov_Pass_incident

"Investigators at the time determined that the hikers tore open their tent from within, departing barefoot into heavy snow and a temperature of −30 °C (−22 °F). Although the corpses showed no signs of struggle, two victims had fractured skulls, two had broken ribs, and one was missing her tongue."