How did erosion form mammoth cave?

Answer 1

Mammoth cave began forming about 10 million years ago when an ancient sea covering the central United States disappeared and erosional forces let cracks and holes expose the limestone that was beneath the sea. Rainwater began to get underground and hallowed out the cave.

Answer 2

An underground river and chemicals formed a kind of hole which later was Mammoth Cave.

Answer 3

Mammoth Cave was formed by water erosion over millions of years.

Answer 4

Mammoth Cave is formed from Mississippian age limestone rock.

Answer 5

I think it is Balsalt (:

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I know it is not in "Balsalt", or even Basalt. It is in limestone overlain by sandstone.

Answer 6

Mammoth Cave was formed when rain seeped through cracks in the ground to form underground rivers which etched paths in the limestone and made many crystal formations.

Answer 7

it was chemically formed