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The teenager began to hallucinate, claiming to see 'snowmen and Kermit the Frog', before walking towards the edge of the ...

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 California teen who walked off a cliff while experiencing altitude-related hallucinations on the tallest mountain in the lower 48 states has begun a slow recovery but remains in a ...

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