Established 1/9/1903 Size 28,295.03 acres (114.5 km2) Wind Cave is distinctive for its calcite fin formations called boxwork and needle-like growths called frostwork. The cave, which was discovered by the sound of wind coming from a hole in the ground, is the world's densest cave system. Above ground is a mixed-grass prairie with animals such as bison, black-footed ferrets, and prairie dogs,[61] and Ponderosa pine forests home to cougars and elk.
Established 1/8/1971 Size 218,200.17 acres (883.0 km2) This park on four main lakes, a site for canoeing, kayaking, and fishing, has a history of Ojibwe Native Americans, French fur traders called voyageurs, and a gold rush. Formed by glaciers, this region has tall bluffs, rock gardens, islands and bays, and historic buildings.[60]
Established 11/10/1978 Size 70,446.89 acres (285.1 km2) This region that enticed and influenced President Theodore Roosevelt is now a park of three units in the badlands. Besides Roosevelt's historic cabin, there are scenic drives and backcountry hiking opportunities. Wildlife includes American Bison, pronghorns, Bighorn sheep, and wild horses.[58]
Established 5/22/1926 Size 199,045.23 acres (805.5 km2) Shenandoah's Blue Ridge Mountains are covered by hardwood forests that are home to tens of thousands of animals. The Skyline Drive and Appalachian Trail run the entire length of this narrow park that has more than 500 miles (800 km) of hiking trails along scenic overlooks and waterfalls of the Shenandoah River.[57]
Established 1/26/1915 Size 265,828.41 acres (1,075.8 km2) This section of the Rocky Mountains has ecosystems varying in elevation from the over 150 riparian lakes to Montane and subalpine forests to the alpine tundra. Large wildlife including mule deer, bighorn sheep, black bears, and cougars inhabit these igneous mountains and glacier valleys. The fourteener Longs Peak and Bear Lake are popular destinations.[54]
https://www.nps.gov/redw/index.htm
Established 10/2/1968 Size 112,512.05 acres (455.3 km2) This park and the co-managed state parks protect almost half of all remaining Coastal Redwoods, the tallest trees on Earth. There are three large river systems in this very seismically active area, and the 37 miles (60 km) of protected coastline have tide pools and seastacks. The prairie, estuary, coast, river, and forest ecosystems have varied animal and plant species.[53]
https://www.nps.gov/pinn/index.htm
Established 1/10/2013 Size 26,605.73 acres (107.7 km2) Known for the namesake eroded leftovers of half of an extinct volcano, it is popular for its rock climbing.[52]