• The Historic Entrance of Mammoth Cave

    Mammoth Cave

    National Park Kentucky

Mollusks

Nature and Science

One of Green River's diverse mussel species

(Kentucky State Nature Preserves Commission)

The Green River in Mammoth Cave National Park contains the most diverse population of freshwater mussels in North America, and one of the most diverse populations in the world. Among the species found in the river are the Ring Pink, Rough Pigtoe, Pistolgrip, Fatmucket, Spectaclecase, Plain Pocketbook, Washboard, Sheepnose, and Snuffbox. Several of the mussel species are federally endangered. A snail (Antroselates spiralis) is found in cave environments.

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.