The Las Conchas Wildfire burning near the Los Alamos National Laboratory is closing in on 100,000 acres.  According to the Forest Service, the fire, which started on Sunday from unknown causes, is only 3 percent contained.

Because the wooded area is dried out, the flames can quickly ignite.  Consequently, fire managers are concerned about the fire taking off on 'spot runs.'  There were over 1,000 firefighters on the scene who were focused on lighting back fires on Thursday to remove brush and other fuels.  They also coated a canyon slope with a thick line of fire retardant foam.

The Las Conchas blaze, which devoured more than 23,000 acres in 24 hours, was expected to plunder more than 1,000 additional acres early Friday, making it New Mexico's biggest fire ever, out-consuming 2003's Dry Lakes fire, which burned 94,000 acres, or 150 square miles, near the Gila National Forest in southern New Mexico.

Here's a look at the latest photos: