Firefighters continued working Tuesday to subdue a wildfire that has spread over about 1,000 open acres in the rural southeastern reaches of San Diego County, threatening back-country neighborhoods and cultural relics while forcing hundreds of people from their homes. The blaze erupted at about 3:30 p.m. Monday when a car overturned and caught fire on Interstate 8 near McCain Valley Road in Boulevard, north of Jacumba Hot Springs, according to Cal Fire. The flames spread into rugged, rocky, brush-covered terrain on the north side of the freeway, moving toward nearby De Anza Springs Resort, said Mike Cornette, a fire captain with the state agency. MORE: https://www.cbs8.com/article/news/local/wildfire/fire-crews-battle-brush-fire-boulevard/509-9dbba17b-8ded-4908-9031-885f282daadb