Access via the North Rim, a lesser-used gateway to the national park, was closed as the White Sage fire continued to burn on Saturday.

Officials evacuated Jacob Lake and the North Rim of the Grand Canyon was closed to visitors because of the fast-moving White Sage wildfire.

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 hiker has died on the South Kaibab Trail in the Grand Canyon National Park while attempting to reach the Colorado River.

The mules are a part of a century-old Grand Canyon experience in which visitors ride into the canyon while admiring its vistas from the saddle. The park service keeps mules for transporting supplies into the canyon, but it's up to the concessionaires to run the daily rides and maintain the mules that carry visitors.

Fast-spreading wildfires have forced the evacuation of part of the Grand Canyon, with the US National Park Service ordering visitors and residents away from its northern rim.

A 42-year-old Utah man has died after he fell while descending a mountainside in Glacier National Park in northwestern Montana.

A wildfire that's burning in the southern part of Black Canyon of the Gunnison National Park has grown to more than 1,600 acres.