Dyatlov Pass

This is a pretty classic story that has been circled around the internet many times. It's the account of how a group of skiers in Russia disappeared and then were found with bizarre circumstances surrounding their deaths. Gruesome details aside, there are a number of plausible solutions for the 'mystery' that I won't go into here. It's been pretty thoroughly debunked over the last fifty years but the events leading up to the hikers' deaths are still fascinating.

There is a link to the Wikipedia article on this after the break.