(SFGate) - A wildfire in Mendocino County grew by more than 1,000 acres Sunday morning and is only 30 percent contained as tinder-dry conditions continue to fuel fires around the northern part of the state, California Department of Forestry and Fire Protection officials said.

The 8,500-acre Lodge Lightning Complex Fire started after lightning struck July 30 in a remote, heavily wooded area about 160 miles north of the Bay Area in the Wilderness Lodge area near Laytonville (Mendocino County). On Friday, eight firefighters were airlifted out of the rugged terrain and taken to burn units for treatment, Cal Fire spokeswoman Lynne Tolmachoff said.

Three of the firefighters were from the Santa Clara County Fire Department. The other five were inmate firefighters from the Salt Creek Conservation Camp, a minimum-security center in Tehama County, Tolmachoff said.

Details about how the firefighters were injured were not immediately available.

On Sunday, the inmate firefighters were back at base camp, joining more than 2,000 other firefighters attacking the blaze, Tolmachoff said. 

The Bay Area firefighters, two men and one woman whom authorities did not name, were recovering at home with serious but non-life-threatening burns after being treated at Santa Clara Valley Medical Center, said Deputy Fire Chief John Justice.