Denali National Park and Preserve spans 6 million acres of Alaska’s interior wilderness. Its centerpiece is Denali (formerly Mount McKinley), which stands at 20,310 feet as North America's tallest peak. The park features diverse terrain, including tundra, spruce forests, and glaciers, and is home to wildlife such as grizzly bears, wolves, moose, caribou, and Dall sheep. In the summer, popular activities include biking, backpacking, hiking, and mountaineering.