For more than a century, West Yellowstone, Montana, has been a key jumping off point for a once-in-a-lifetime visit to the world’s first national park.

An industrial hog farm that could produce more than 2 million gallons of manure and wastewater over porous karst geology roughly 5 miles up a tributary of the Buffalo National River was permitted based on erroneous information, according to a coalition opposing the project.

Sixty-thousand pounds of Civil War cannons are returning to Fort Moultrie National Monument in South Carolina for public display at the park's Cannon Row.

More than two dozen divers are scheduled to search parts of Lake Powell in Glen Canyon National Recreation Area for non-native quagga mussels later this month.