List of national parks of the United States National parks National parks

| Name_ | Location_ | Date_established | Area | Description_ |
|---|---|---|---|---|
| Mammoth Cave | Kentucky , 37°11′N 86°06′W﻿ / ﻿37.18°N 86.10°W | July 1, 1941 | 52,830.19 acres (213.8 km2) | With 392 miles (631 km) of passageways mapped, Mammoth Cave is by far the world`s longest cave system. Cave animals include eight bat species, Kentucky cave shrimp, Northern cavefish, and cave salamanders. Above ground, the park contains Green River (Kentucky), 70 miles of hiking trails, sinkholes, and springs. |
| Mesa Verde | Colorado , 37°11′N 108°29′W﻿ / ﻿37.18°N 108.49°W | June 29, 1906 | 52,121.93 acres (210.9 km2) | This area has over 4,000 archaeological sites of the Ancestral Pueblo, who lived here for 700 years. Cliff dwellings built in the 12th and 13th centuries include Cliff Palace, which has 150 rooms and 23 kivas, and the Balcony House, with passages and tunnels. |