A water treatment facility at the North Rim had been compromised by the fire, causing chlorine gas to fall towards the bottom of the canyon.

The lightning-caused wildfire that consumed roughly 70 structures seemed unremarkable for days. High winds changed that.

A wildfire burning in Grand Canyon National Park triggered a chlorine gas leak Saturday afternoon after flames reached a ...

The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility, and the White Sage Fire, located in ...

A wildfire burning throughout Grand Canyon National Park damaged a water treatment facility on Saturday, causing a chlorine ...

The fast-moving fire destroyed a historic lodge and dozens of other structures in the Grand Canyon National Park.

Dozens of buildings inside the North Rim of the Grand Canyon have been destroyed, including a historic lodge, as a chlorine ...

The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility on the Grand Canyon's North Rim.

The Grand Canyon Lodge was one of dozens of structures destroyed in a fast-moving wildfire in Arizona over the weekend, the ...

The Dragon Bravo Fire started burning on July 4, but grew out of control a week later because of strong winds and destroyed ...

The Dragon Bravo Fire burning on the north rim of the Grand Canyon has triggered a chlorine gas release. This comes as flames reached the water treatment facility.

The visitor center and a wastewater treatment plant were among the 50 to 80 structures lost, the park superintendent said.