The fire on the North Rim of the Grand Canyon started from a lightning strike but was managed as a controlled burn until it spread.

A wildfire in tinder-dry forest on the North Rim of the Grand Canyon grew around 50% on Tuesday after it destroyed dozens of buildings, prompting public outrage that it was left to burn for a week before firefighters tried to fully extinguish it.

RICHFIELD, Utah ( ABC4) — The Monroe Canyon Fire has almost doubled in size since Monday, reaching over 8,600 acres. As of Wednesday morning, the Great Basin Team 3, a Complex Incident Management Team, took command of the fire that remains at 0% completion.

Along the Grand Canyon’s North Rim, the Dragon Bravo Fire that destroyed the lodge and other buildings spread to nearly 9 square miles (23 square kilometers) Monday.

Gov. Katie Hobbs questioned why the U.S. government decided to manage the Dragon Bravo fire, which started with a lightning strike, as a “controlled burn” during the height of the summer.

The congressman is the latest lawmaker asking why the Dragon Bravo fire was not immediately extinguished when it was ignited by lightning on July 4.

The Grand Canyon's North Bravo Fire intensified on July 11, the day before Katy Rock Shop owner Jacob Proctor and his family arrived at the national park.

Officials have set a goal date for containment of the nearly 4,000-acre and, so far, 0% contained South Rim Fire that has been burning in Black Canyon of the Gunnison National Park for days.