One of Indiana’s most prominent exports is its limestone. And where there’s limestone, there are caves. Indiana has over 3,000 known caves, and more are found every year.

Today we re-air our show on Indiana's show caves with guests from Bluespring Caverns, Marengo Caves, Squire Boone Cave, and Indiana Caverns, as well as experts on cave geology and exploration. We find out why Indiana has so many caves, and what it takes to explore them.

Originally aired on November 17.

Produced by Matt Pelsor.

Guests:

Gary Roberson
Owner, Indiana Caverns

Caudia Yundt
Manager, Squire Boone Caverns

Steve Calhoun
Owner, Marengo Cave

Sam Frushour
Co-Owner, Bluespring Caverns; Author, "A Guide to Caves and Karst of Indiana"

Jim Richards
Co-Owner, Bluespring Caverns

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