(CNN) -- A southern Colorado wildfire ignited two weeks ago by a lightning strike has burned nearly 5,000 acres, a national park spokesman said Monday.
Strong winds and dry, dead trees helped the flames spread over 4,713 acres of Great Sand Dunes National Park and Preserve, although the fire is moving away from where visitors have access, National Park Service spokesman David Eaker said.
The park's visitor center, Pinyon Flats campground and the popular dunes area remain open, Eaker said. Hiking trails in some areas have been closed, he said.
The fire started during a June 6 lightning storm, Eaker said. It is located about four miles north of the visitors center and is moving to the north and east, he said.
CNN's Sara Pratley contributed to this report.