It became a US National Park on 1 July 1941.
Mammoth Cave National Park was established as a national park on 1 July 1941.
Mammoth Cave was established as a national park on July 1st, 1941.
On 1 July 1941.
On 1 July 1941.
The mammoth cave was discovered yesterday.This is one huge, mammoth cave!The mammoth cave paintings were incredibly detailed.
mammoth cave is a cave
Mammoth Cave National Park was established as a national park on 1 July 1941.
Mammoth Cave Region
The Mammoth Cave System, at 367 miles in Kentucky takes the prize. ---- Mammoth Cave System is also on the Mammoth Cave National Park located in Edmonson, Hart, and Barren Counties. The Park is 52,835 acres big that is (214 km power 2) The Mammoth Cave System was Established in July 1, 1941.
Mammoth Cave, located in Kentucky's Mammoth Cave National Park in the United States.
The Mammoth Cave system, located in Kentucky, is the largest cave in the world.
Mammoth Cave has over 390 miles of passageways. Mammoth Cave National park covers 52,385 acres. Mammoth Cave was once used as a tuberculosis hospital. Mammoth Cave receives over 500,000 visitors each year.