Visitors and staff at two national parks in the U.S. West have been evacuted because of wildfires. Officials at Black Canyon of the Gunnison National Park in Colorado say the park closed Thursday morning after lightning sparked blazes on both rims.

A growing wildfire ignited by lightning is prompting evacuations near the Grand Canyon after burning through over 1,000 acres in Arizona

Engine 3411 is responding to a fire on the north rim of the Black Canyon of the Gunnison. The Colorado State Patrol has been called to assist in the evacuation of the campgrounds at the Black Canyon of the Gunnison National Forest area. Two active fires are burning, one near the… pic.twitter.com/Xdpg4jBFld