Bluespring Caverns

Bluespring Caverns is a cave system located in Lawrence County, Indiana, approximately 80 miles (128 km) south of Indianapolis.

A small pond on the farm of George Colglazier vanished overnight, becoming a sinkhole, and the present day entrance into the cave system.

The undeveloped cave soon had Colgazier's children wanting to learn more about the newest adventure spot on the family's 100-acre (0.40 km2) farm.

They freely allowed cave explorers on their property and asked them to obey one rule, "not to destroy or remove from the caverns".

The cave is host to a number of species, including crayfish, salamanders, crickets, spiders, and beetles.