The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility, and the White Sage Fire, located in Kaibab National Forest, has forced hundreds to evacuate.

The visitor center and a wastewater treatment plant were among the 50 to 80 structures lost, the park superintendent said. The area was evacuated Thursday.

Two fast-moving wildfires—the Dragon Bravo and White Sage fires—have scorched more than 45,000 acres, destroyed the iconic North Rim lodge and dozens of structures, and led to long-term closures in the Grand Canyon.