Ep. 161: Minnesota's Mushroom Valley - Mushroom Caves & the Unexplored Underworld (feat. Dr. Greg Brick)

Today on Mushroom Hour we are going spelunking with the gracious Dr. Greg Brick. Dr. Brick has worked as a hydrogeologist with environmental consulting firms, at the Minnesota Department of Natural Resources, and has taught geology at local colleges and universities. He has edited the Journal of Spelean History for the past 20 years. He has published more than 200 articles about caves and was the recipient of the 2005 Cave History Award from the National Speleological Society. His has written...