Boomshaw is a Tennessee word for "pit filled with water." There are numerous boomshaws in middle Tenneessee, and the main entrance for this system is directly in the front of the landowner's house. After connecting to a downstream sink, this has the potential to be a multi-mile underwater system, if the water would ever clear. Currently there is slightly over 5000 feet of explored passage, and is the second deepest underwater cave in Tennessee at 168 feet deep.
Jason, after a successful dive in the downstream side of the system.
The Upstream entrance in very low water, the best diving.
Diving immediately after a huge rain (the same one that caused the nashville flood)- the water was rising as the dive was going on, and the outflow went from none to very heavy during the dive and the visibility dropped to this correspondingly.
Chrissy looks into the downstream.