Zane Wach, 14, left, began hallucinating before stepping off a 120-foot cliff while hiking with his father, seen right.

Zane Wach, 14, was exhibiting symptoms of altitude sickness before falling from a cliff on California's Mount Whitney.

Ryan Wach said his son Zane Wach, 14, experienced altitude sickness while climbing California's Mount Whitney and seemed to ...

An incredibly heartbreaking tragedy occurred while a father and son duo were on a hike meant to be a special moment in their ...