A vegetation fire has burned at least 2,000 acres at the center of Camp Pendleton, clouding the skies about San Diego's North County with a smoky haze.
The blaze, dubbed the Horno Fire, started at about 1 p.m. Thursday off Horno Canyon Road, base fire officials say.
No structures were threatened, and no injuries have been reported.
The fire has been about 70 percent contained, and on Friday, the flames started pushing north and east, closer to the Cleveland National Forest, Cal Fire officials say.
A few Cal Fire crews and a helicopter were called in Thursday to help Camp Pendleton firefighters.
Officials say crews have been doing backfiring operations to contain the fire.
The cause is still unknown.