CAVE DIVING PIONEER- Bill "HOGARTH" Main

PD45: <audio>

Part 1. Interview with CAVE DIVING PIONEER Bill "HOGARTH" Main, the originator of the HOGARTHIAN or the HOG. We talk with Bill after a dive at Devils System. Bill Main talks about the past and future of cave diving.

Part 2. We talk with Kate Thompson about Great Lakes shipwreck diving in the Thunder Bay National Marine Sanctuary.