The hiker had turned around at Skeleton Point and was making his way back up the trail when the incident occurred, according to the NPS. Summer temperatures on exposed parts of the trail can exceed 120 degrees, creating extremely hazardous conditions for hikers, according to the NPS.

The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their peak. Temperatures in the inner canyon can reach over 120 degrees Fahrenheit in the shade, creating "extremely hazardous conditions for hikers," the NPS said.

A 67-year-old man hiking in the Grand Canyon National Park died on a trail while hiking in extreme heat, which possibly caused hazardous conditions. The Grand Canyon National Park Service said that at about 11:50 a.