Rapid growth on the South Rim fire in Black Canyon of the Gunnison National Park forced immediate evacuations in Montrose County on Saturday afternoon.

A wildfire that's burning in the southern part of Black Canyon of the Gunnison National Park in western Colorado has grown to more than 1,600 acres. It has damaged some park equipment and several outbuildings.

The Black Canyon of the Gunnison National Park, a popular outdoor destination in western Colorado, was closed to the public after a wildfire on the South Rim rapidly doubled in size.