Mammoth Cave NP Frozen Niagara Token

Company

National Park Service

Price

$2.00

Source

Official Store

The Frozen Niagara is the most notable flowstone formation in Mammoth Cave National Park. Flowstone refers to sheets of calcium carbonate that form along cave walls. Flowstone hangs downward and may create curtain-like sheaves along ledges, better known as draperies. Commemorate your trip to this captivating site with this collectible token.