Exploring the World’s Coolest Caves with Christian Stenner

Venture into some of the darkest and most unique places inside the Earth: Caves formed where glacier ice and volcanic heat interact, creating otherworldly environments that are both cold and hot at the same time. Christian Stenner has explored largest and deepest of these glaciovolcanic caves in the world.  Caves that tell us about volcanic activity, about changing climate, the extreme microorganisms that can survive there, and how we might first find life on other planets.