Grand Canyon, Dragon Bravo Wildfire
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A combination of high winds, dry air and above average temperatures caused a wildfire in the Grand Canyon to rapidly expand and cause major damage.
The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility on the Grand Canyon's North Rim.
A mix of high temperatures, gusty winds, low humidity, and dry vegetation has fuelled the fire's swift advance in Arizona, officials say.
Abnormally dry, hot conditions near the Grand Canyon's North Rim allowed the Dragon Bravo Fire to grow rapidly.
Two separate wildfires burned on both rims of the Black Canyon at Gunnison National Park on Thursday. Visitors and staff were evacuated, while the park closed to any incoming guests until further notice.