A second search-and-rescue mission in the past week has been initiated at Great Smoky Mountains National Park, where a 23-year-old man is thought to have vanished in the park not far from the Sugarlands Visitor Center.

You can start planning: National Park Week will fall April 21-29 this year, with activities planned throughout the National Park System.

White-nose syndrome, a disease deadly to bats, has been detected in both Acadia and Great Smoky Mountains national parks.

Tucked away in southeastern Arizona is an off-the-beaten-path destination often described as a "Wonderland of Rocks." The nickname for Chiricahua National Monument is certainly appropriate, but this area offers a lot more than interesting geology, including a fine variety of trails that could be called a hiking smorgasbord.