A wildfire that tore through a historic Grand Canyon lodge and raged out of control Monday had been allowed to burn for days before erupting over the weekend, raising scrutiny over the National Park Service’s decision not to aggressively attack the fire right away.

A wildfire on the Grand Canyon’s North Rim has consumed some 5,000 acres and destroyed between 50 and 80 structures, including National Park Service administrative buildings, visitor facilities, a gas station and a water treatment plant.

A wildfire burning throughout Grand Canyon National Park damaged a water treatment facility on Saturday, causing a chlorine gas leak that is hazardous to people in the area. The Dragon Bravo Fire has burned more than 5,