The Wallow Fire of eastern Arizona rages on it.

So far, it has consumed 486 square miles of land, making it the second largest wildfire in Arizona history, reported CBS (the largest one occurred in 2002 and burned 732 square miles).

The flames approached the town of Eagar in the afternoon, forcing about half of the town’s 4,000-strong population to evacuate, reported CBS. Springerville, another Arizona town, has order 2,000 residents to prepare for evacuation.

The fire also burned 6 buildings and threatens to burn 65 others, reported

Authorities believe the fire was started on May 29 by an unattended camp fire. After the fire became out of control, strong winds fanned it. So far, firefighters are having trouble battling the flames and do not have the fire contained. reports that there are “900 personnel are combating the flames, with seven helicopters, 31 engines and three bulldozers assisting.”