The Ultimate Landmark Quiz

Mammoth Cave

 

This is Mammoth Cave. It is the longest known cave system in the world, with 420 miles (680 km) of surveyed passageways. Today, people are still making discoveries with new paths continuously found. Mississippian-aged limestone strata covered by a sandstone coat make up the cave’s material. It became a national park in 1941 and a World Heritage Site in 1981. It is one of the state’s most popular attractions.