Divers Joe Hoyt and Russ Green prepare to dive the Middle Island Sinkhole assisted by Scott Kendall, Steve Nold and Tom Joyce. Image courtesy of Thunder Bay Sinkholes 2008.
Divers Joe Hoyt and Russ Green prepare to dive the Middle Island Sinkhole assisted by Scott Kendall, Steve Nold and Tom Joyce. Image courtesy of Thunder Bay Sinkholes 2008.