Episode 6 goes literally "Under Our Feet" to explore the caves of southwestern Wisconsin. Why are there caves here? And what secrets of Earth's past do these subterranean spaces hold? We hear from Jan Okeson (Cave of the Mounds) and Cameron Batchelor (University of Wisconsin Geosciences) about education and research that takes place underground.
 
More at www.uofpod.org. Support the show at patreon.com/RudyMolinek.
 
Music is the song Arizona Moon by the Blue Dot Sessions.