Erix gave the link to a 12 pages thread about this case, worth the read.
Here's a short but very interesting video about the case:
Stuff they don't want you to know: Dyatlov
By the way Dyatlov is not regarded as a "UFO case", it should be in the legend section of the forum.
Edited by JonathanVonErich, 07 March 2012 - 05:41 PM.