Determined to get into the cavern, Duane and his team explore new methods to find a dry entrance; while Chad takes to the skies in search of a natural opening, Eric thinks the radioactive rocks found in the box might show them where to dig.
Released: Jan 01, 1970
Runtime: 00:41:14 minutes
Genre: Reality, Documentary
Stars: Duane Ollinger, Chad Ollinger, Charlie Snider, Eric Drummond