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.

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The Grand Canyon Lodge was the park's one and only hotel, according the National Park Service, with the next nearest lodgings roughly 18 miles away.

What fueled the explosive growth of the Dragon Bravo Fire was a mix of gusty winds, dry air and above-normal heat – weather conditions experts described as atypical for this time of year, when monsoonal moisture typically tamps down wildfire risk across Arizona.

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.

A wildfire is rapidly spreading near the Grand Canyon, and has grown more than ten times in size over the last 24 hours. The White Sage Fire is located around 250 miles southwest of Denver, Colorado and has grown from 1,