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.

The fire destroyed about 70 structures at the North Rim, including a water treatment facility causing a chlorine gas leak.

A wildfire has destroyed a historic lodge and dozens of other structures on the North Rim of the Grand Canyon in Arizona, raising questions over the National Park Service's decision not to aggressively fight the fire straight away.