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.

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 ...

Zane Wach, 14, was taken off of ventilators during his ongoing medically-induced coma nearly a month after the boy wandered ...

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 ...

The father of Zane Wach, 14, says hallucinations prompted his son to question whether he was dreaming before he fell from a ...

Several victims are displaced as the home they were living in caught on fire on Saturday.Fresno County Fire received a call ...