MINERAL, Calif. (AP) -- A growing wildfire has prompted officials to close a 10-mile stretch of the main road through Lassen Volcanic National Park.

Park spokeswoman Lisa Wilkolak says the Reading fire was sparked by a lightning strike on July 23 in the park about 50 miles east of Redding. The blaze was fairly small until Monday, when strong winds caused it to grow more than 1,000 acres.

Officials say about 300 firefighters are battling the blaze, which had burned about 1,400 acres and was 10 percent contained Tuesday.

Officials say the Main Park Road is closed from Summit Lake to Devastated Area. Some trails were closed, but campgrounds and visitor centers remain open.

About 100 miles south, a wildfire in the Plumas National Park has consumed 24 square miles and was 10 percent contained Tuesday.