The Sharp Fire burns near Wrightwood in the San Gabriel Mountains, Thursday, Aug. 8, 2013.
A fire burning near Wrightwood that forced evacuations on Thursday crept up to 100 acres overnight as firefighters had to hike over steep, nearly inaccessible terrain.
"The boots on the ground are actually hiking in and trying to get a line around the fire. To stop it, we have aerial attacks going on at same time. We've actually been using the DC-10," said Sherry Rollman, a spokesperson for Angeles National Forest.
The fire was being fed mostly by timber, which burns much slower than the chaparral that is fueling the more aggressive Silver Fire that has already destroyed 26 homes near Banning. But because of the difficulty reaching the fire, containment was only at 5 percent. Rollman said there was still no estimate when it might be contained.
A mandatory evacuation was still in place Friday morning for about 100 homes.
The Red Cross had set up an evacuation center at Serrano High School in Phelan, according to the Riverside County Sheriff's Department.