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

Firefighters are trying to contain the Dragon Bravo Fire on the Grand Canyon’s North Rim and keep it from destroying more buildings.

The Dragon Bravo wildfire, one of two fires north of the canyon, burned down the historic Grand Canyon Lodge and nearby cabins July 13. The lodge was the only hotel inside the park's North Rim. The Dragon Bravo fire, which was triggered by lightning July 4, has consumed an estimated 5,000 acres.

The fire on the North Rim of the Grand Canyon started from a lightning strike but was managed as a controlled burn until it spread.

Firefighters are battling a lightning-caused wildfire on the North Rim of the Grand Canyon. The Dragon Bravo Fire has burned down the Grand Canyon Lodge and triggered a chlorine gas leak.

Officials said the Dragon Bravo Fire, burning in the North Rim of Grand Canyon National Park, "exhibited extreme and volatile fire behavior the evening of July 12.

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.

The Dragon Bravo Fire started on July 4 and was managed at first as a controlled burn. Then the wind picked up, and it quickly became uncontrollable.