The Dragon Bravo Fire burning inside Grand Canyon National Park has destroyed dozens of structures, including a beloved and historic lodge.

Parts of Grand Canyon National Park remained closed to the public Sunday because of wildfires and the release of chlorine gas from a North Rim water-treatment facility, the National Park Service said.

The wildfires that destroyed a historic lodge have forced the closure of the Grand Canyon’s North Rim for the rest of the season. The blaze destroyed the Grand Canyon Lodge, cabins, employee housing, visitor’s center and a wastewater treatment plant, The Associated Press reported.