Military and civilian firefighters worked Friday to subdue a fire that has blackened about 800 acres in the northern reaches of Camp Pendleton and sent smoke billowing into the North County sky.
As of Friday afternoon, the ground and airborne crews had the blaze about 30 percent contained, base officials said.
According to Camp Pendleton, operations remain focused on 2,000 acres off Roblar Road and Case Spring but the fire had only burned 800 acres. As of 2 p.m., the fire has been 30 percent contained.
The fire, which erupted Thursday afternoon, was posing no structural threats, according to the Camp Pendleton public-affairs office.
Military firefighters were being assisted by crews from Cal Fire, Cleveland National Forest and the city of San Diego.
The cause of the blaze, dubbed the Roblar Fire, was not immediately clear, though it is not uncommon for fires to be sparked at Camp Pendleton by live-ammunition weapons training.