A wildfire south of Patagonia doubled in size from Monday to Tuesday, consuming 3,800 acres in mountainous terrain.

About 200 crew members were on fire lines Tuesday, trying to keep the blaze from approaching Patagonia, about six miles away, said Michelle Fidler of the U.S. Park Service.

“The fire is still burning well within the Coronado National Forest, so there’s no there’s structures threatened at this time,” Fidler said.

Crews have been focused on the north and east sides of the fire to help protect Patagonia, she said, and they have used the terrain to their advantage, setting fires upslope to burn off fuels and stop the fire.