The mystery of the death of 9 university stidents taking part in an extended winter ski trek may never be solved. Was it a killer yeti? An avalanche? Sound waves?  Weapons testing?  We presnet the facts, including transcripts of interviews with investigators, and we present a reconstruction of events along with a theory that best matches those facts.  The rest is up to you.  Source fpr photographs and information: www.dyatlovpass.com