The "wild heart of a continent" is explored in the National Geographic May 2016 issue "Yellowstone: The Battle for the American West," which hit new stands April 26. Everything from concerns about land use, tourism, wildlife restoration, animal management, migration and geothermals in the country's first national park is thoroughly explored.
The special issue was three years in the making with principal writer and Bozeman resident, David Quammen. The magazine and online feature were lushly photographed in-depth by six photographers: Michael Nichols, David Guttenfelder, Ronan Donovan, Charlie Hamilton James, Erika Larsen and Joe Riis.
Here's a peak at some of the photos.
What wilderness means to people has steadily changed since Yellowstone was founded. The Park Service no longer tries to make tame spectacles of wild animals. But today, as in 1972, when this photo was taken most visitors to the park never get far from the road and a black bear is still a reason to pull over.