It is unclear whether the father and son reached the summit, but any travelers reaching altitudes of 8,000 feet — sometimes lower — are susceptible to altitude sickness and symptoms.

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

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

A beloved teen and competitive swimmer at Hart High School in Santa Clarita was surrounded by messages of love and support on ...

A California teen, who was placed in a coma after he hallucinated and walked off a cliff while hiking, is now breathing on ...

The health update comes after the 14-year-old walked off the edge of Mount Whitney while hoking with his father after ...

A 14-year-old California boy walked off a 120-foot cliff in front of his horrified father — telling him he saw “snowmen and ...

A devastating hiking accident on Mount Whitney has left a 14-year-old California boy clinging to life after altitude-induced ...