Mammoth-Flint Ridge Cave system with over 390 miles of passageways.
mammoth cave if you researched how big mammoth cave is well i don't know how long but it is the longest in the world
Mammoth Cave in Kentucky is the world's longest known cave system. The Jewel Cave system near Custer, South Dakota is ranked as the second longest known cave system.
Mammoth Cave
it is 400 km it is right trust me i should know.
Mammoth Cave in Kentucky.
The Mammoth Cave system in Kentucky, USA, is the longest known cave system in the world, with over 400 miles of explored passageways.
Mammoth Cave in Kentucky.
Kentucky. the roaring sea horse that lives in a kelp forest cave system, china ( also known as the sao- faung system) What is the world's longest cave? Respuesta: Mammoth Cave System in USA ( Kentucky) with 370.000 lenght miles
Kentucky. the roaring sea horse that lives in a kelp forest cave system, china ( also known as the sao- faung system) What is the world's longest cave? Respuesta: Mammoth Cave System in USA ( Kentucky) with 370.000 lenght miles
The longest cave system is Mammoth Cave in Kentucky, it's length is 367 miles (591 kilometers).
mammoth cave is over 350 miles long.
Mammoth Cave, located in Kentucky's Mammoth Cave National Park in the United States.