Caves! Caverns! Grottos! Crystals! Let's get down and dirty with Speleology with explorer, researcher, professor, and paleoclimatologist Dr. Gina Moseley. We discuss the deepest and darkest caves, who counts as a spelunker, what’s a stalactite, what’s a stalagmite, and are giant cave crystals real? Also: How caves can tell us about ancient climates and why nothing beats the longing for the underground. Grab a friend and wear a helmet. We’re goin’ in.