The building was surrounded by vegetation on fire when a team of “helitack” firefighters arrived to protect the area on Tuesday. Grand Canyon National Park officials said the crews knew if the pump house fell, the consequences could cripple park operations for months.

GRAND CANYON NATIONAL PARK, AZ (AP/AZFamily) ― A historic lodge on the Grand Canyon’s North Rim is among more than 70 structures lost as a result of a fast-moving wildfire that continues to burn out of control.

A fast-moving wildfire is currently tearing through the North Rim of Grand Canyon National Park, forcing evacuations, shutting down major tourist areas and destroying one of the park’s most historic landmarks.

The Dragon Bravo Fire started on July 4 and was managed at first as a controlled burn. Then the wind picked up, and it quickly became uncontrollable.

A Grand Canyon water treatment facility located at the North Rim caught fire on Saturday, causing chlorine gas to be released into the air. Multiple closures are being enforced due to the incident.