ROCKY MOUNTAIN NATIONAL PARK, Colo. (AP) -- Firefighters are trying to control a wildfire burning on the east side of Rocky Mountain National Park.

Park officials say rough terrain is hampering their efforts and could be a problem on Wednesday.

The fire prompted evacuations of a nearby campground on Tuesday, along with backcountry campsites and trails in the area.

The fire has burned across about 300 acres and is about 2 miles west of the Fern Lake trailhead.

In southwest Colorado, crews were trying to contain the 110-acre Goblin Fire that federal officials say may have been started by the Durango & Silverton Narrow Gauge Railroad Train.