Two Arizona wildfires have destroyed a cherished 88-year-old Grand Canyon park lodge and closed the canyon’s North Rim for the rest of the season, park officials said.

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.

A second, larger wildfire, known as the White Sage Fire, also was started by lightning on July 9. That fire forced closure of the North Rim and has burned at least 40,000 acres. It was at zero containment on July 13, officials said.

No injuries or deaths have been reported. All staff and residents have been evacuated, park officials said.

Where are the wildfires?

The Dragon Bravo fire also triggered a fire at the park’s water treatment plant, causing chlorine gas to be released.

“Chlorine gas is heavier than air and can quickly settle into lower elevations such as the inner canyon, posing a health risk,” the park said in a news release.

Authorities evacuated firefighters from the North Rim and hikers from the inner canyon, the park said.

The park also closed North Kaibab Trail, Phantom Ranch, and the South Kaibab Trail.

The Grand Canyon Lodge opened in 1937. It was “often the first prominent feature that visitors see, even before viewing the canyon,” the park service said.

The lodge was built on the foundation of a lodge that burned down in 1932. It used many of the original’s materials but was scaled back in its design, USA TODAY reported. It was declared a National Historic Landmark in 1987.

Park officials said 50 to 80 structures have been lost, including park service administrative buildings and visitor facilities, according to preliminary assessments.

CONTRIBUTING Christopher Cann, Perry Vandell, Rey Covarrubias Jr. and Gabe Hauari

SOURCE USA TODAY Network reporting and research; Reuters; National Park Service; National Weather Service