The Urinals of Mammoth Cave National Park

Mammoth Cave National Park is home to the longest recorded cave system in the world (with more than 336 miles explored and mapped) and is located in Mammoth Cave, KY.

Filed under: Top 1,000 Urinals | Parks

"[Mammoth Cave National] Park was established to preserve the cave system, including Mammoth Cave, the scenic river valleys of the Green and Nolin rivers, and a section of south central Kentucky."

This picture was submitted by an independent contributor.