The confounding disappearance of Matthew Greene.

Matthew Greene a 39-year-old math teacher from Nazareth Area High School went missing in California's Mammoth Lakes in 2013 Matthew had been hiking with some friends in the Mammoth Lakes area while staying at the Shady Rest campground right before going missing. Greene had planned to drive to Colorado to meet up with friends for more climbing as soon as his car was ready. However, due to the car issues, Matthew decided to continue climbing in the area alone it was then that he would vanish never to be seen again.