A Grand Canyon water treatment facility located at the North Rim caught fire on Saturday, causing chlorine gas to be released into the air. Multiple closures are being enforced due to the incident.

Authorities maintained the evacuation zones for the White Sage Fire north of the Grand Canyon as the fire grew expectantly.

A wildfire burning in Grand Canyon National Park triggered a chlorine gas leak Friday afternoon after flames reached a water treatment facility.

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 visitor center, the gas station and a waste water treatment plant also were lost, along with some employee housing and an administrative building.

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.

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.

In near 100 degree summer heat, two runners braved the trek of a lifetime in solidarity and support of a Chloride resident who is fighting her battle with cancer for