• The Historic Entrance of Mammoth Cave

    Mammoth Cave

    National Park Kentucky

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  • Alert - Mammoth Cave is in an area highly endemic to histoplasmosis

    Histoplasmosis is a serious infection caused by breathing in spores of a fungus often found in bird and bat droppings. Infants and immunocompromised persons are especially vulnerable. Click the link for more information. More »

Post Office

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A United States Post Office is located behind the Caver's Camp Store near the Mammoth Cave Campground. (270)758-2311.

The postal code for Mammoth Cave is 42259.

Post Office Hours:
Monday-Friday: 10:30 - 2:30
Saturday: 12:30 - 2:30

 

Did You Know?

Soda straw stalactite

Stalactites grow downward – they hang "tight" to the ceiling – while stalagmites grow upward – they "might" reach the ceiling someday. Mammoth Cave's formations include many types of calcite formations.