Wildfires can burn and spread differently depending on what vegetation they burn. The two fires in northern Arizona have varied landscapes. Ponderosa pine trees grow near the North Rim of the Grand Canyon and can live for hundreds of years.

Officials have closed the North Rim of the Grand Canyon as the White Sage Fire burns near the town of Fredonia. Just 35 miles south, the Bravo Dragon Fire has destroyed structures inside the park.

Republican Rep. Paul Gosar has joined some Democrats in demanding answers about the handling of the Dragon Bravo Fire.

Arizona officials are pressing for an investigation into the National Park Service's handling of the Dragon Bravo Fire, which spread after being managed as a controlled burn.

Fire activity on the North Rim of the Grand Canyon has forced the closure of several trails and campgrounds. Meanwhile, life goes on at the South Rim where tourists endured a smokey visit Monday.

Abnormally dry, hot conditions near the Grand Canyon's North Rim allowed the Dragon Bravo Fire to grow rapidly.

Gov. Katie Hobbs and Senators Mark Kelly and Ruben Gallego are calling for an independent investigation into how federal officials managed the Dragon Bravo Fire burning on the North Rim of Grand Canyon National Park.

The smoke Tuesday morning is likely to be the most noticeable we've seen so far this year in Denver. DENVER — The Denver area could see smoke and haze on Tuesday morning from wildfires burning in northern Arizona and southern Utah. The smoke on Tuesday morning is likely to be the most noticeable we've seen so far this year in Denver.