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 »
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:
Did You Know?
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.