Blue Spring Cave in White County is the longest cave in Tennessee, over 38 miles and still increasing. For four years (2006-2010) I collected all of the 20 plus years of sketches and collated them into one mapbook. The mapbook underwent one printing of 200 copies, all of which were sold or donated to explorers. The project started with Chrissy, Marbry Hardin and myself diving the spring pool in the landowner Lonnie Carr's back yard. After 5500 feet of underwater passage, 1200 feet of dry passage, and three sumps, we finally connected to the main cave.
Thanks to Bob Biddix for his fantastic dry photos shown below (the good ones!)