More than 1,200 firefighters battled the nation’s largest wildfire Saturday in rugged mountains and canyons of southwestern New Mexico, racing to build lines to corral the huge blaze.

The fire has charred more than 354 square miles of the Gila National Forest, and fire

managers expected it to start burning down the mountains east of the community of Glenwood. While there was no immediate threat, residents there have been immersed in a thick haze of smoke for days. At night, the ridgeline in the distance lights up with flames.