Close Call: Hiker's Rare Condition Almost Proves Fatal.

A hiking trip in the Grand Canyon turned dangerous when one of the hikers developed rhabdomyolysis, a rare condition that can be fatal if left untreated. Despite having Wilderness First Responder training, the condition was not initially recognized. The hiker was evacuated by park rangers and transported to a hospital for treatment. The incident highlights the importance of proper preparation and acclimation for extreme outdoor activities.