The Tunnelers

How deep into the Earth have humans traveled? How far have we drilled? In this episode of Stuff to Blow Your Mind, Robert Lamb and Joe McCormick explore some interesting lows from the history of mining, geologic exploration and good old fashioned subterranean living. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com See omnystudio.com/listener for privacy information.