The National Park Service is defending its handling of a lightning-sparked wildfire that destroyed the nearly century-old Grand Canyon Lodge and dozens of historic cabins, saying containment lines had been built around the blaze and crews were prepared to conduct defensive firing operations.

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

Arizona's governor has demanded an investigation into why a wildfire that destroyed a historic lodge and dozens of other structures on the North Rim of the Grand Canyon was allowed to burn for a week before federal firefighters tried to put it out.

Wildfires burning at or near the Grand Canyon's North Rim are still raging as strong winds, high heat and low humidity persist.

The National Park Service is defending its decisions regarding letting the Dragon Bravo Fire burn before it got out of control.

The Grand Canyon’s North Rim in Arizona also closed Thursday because of a wildfire on adjacent Bureau of Land Management land near Jacob Lake. The Coconino County Sheriff’s Office said it helped evacuate people from an area north of Jacob Lake and campers in the Kaibab National Forest nearby.