LURAY, Va. (CBS19 NEWS) -- Firefighters are continuing to battle a two-and-a-half acre wildfire in the Shenandoah National Park.

According to the national park, 18 firefighters from the National Park Service, the Virginia Department of Forestry and the U.S. Forest Service Idaho City Hotshots are working on the Miller’s Head Fire on Monday.

The fire, which was initially reported on Friday afternoon, is in steep and rocky terrain and is believed to have been caused by a natural incident, not human activity.

SNP reports park structures are not being affected by the fire, and all trails and facilities were open over the weekend.

As of Monday afternoon, the fire is 30 percent contained.

The region where the fire is located did get some rain on Sunday afternoon, which officials say helped to get it more under control.

Along with issues involving the terrain, heavy fog impacted efforts to fight the fire on Monday morning.

Work is still underway to keep it from spreading any further.