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The system has been explored and mapped by cave divers of the Jacob's Well Exploration Project and has been shown to consist of two principal conduits. One passageway measures approximately 4,500 feet (1,400 m) from the surface with a maximum depth of 137 feet (42 m), and a secondary one extends approximately 1,000 feet (300 m) in length from the point where it diverges from the main conduit.
The dive shop withheld the gate key, unless a diver showed proof of cave diving certification, which requires two months' training including 125 dives with an instructor or certified diving partner. This policy was instituted after the deaths of 13 divers in the cave during the 1990s, and in response to threats from the state to ban diving in ...
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Jacob's Well (Texas) – Perennial karstic spring in the Texas Hill Country; SS James Caldwell – Liberty ship of WWII; James Eagan Layne – Liberty ship sunk off Cornwall, now a dive site; Japanese cruiser Sakawa – Agano-class light cruiser; Japanese destroyer Oite – Kamikaze-class destroyer built for the Imperial Japanese Navy during ...
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Also: spring or resurgence. Cave where water flows out of the entrance used for diving. The flow will generally help divers on the way out. sink See: sink A cave where water flows into the entrance used for diving, which can hinder divers from getting out. sump See: sump A locally low-lying water filled passage of a cave. A cave may have several sumps separated by unflooded or partially ...
Jarrod Michael Jablonski (born April 24, 1969) is a pioneering technical diver and record setting cave diver [1] as well as an accomplished business owner and operator. These business operations include Halcyon Manufacturing, Extreme Exposure Adventure Center and Global Underwater Explorers.
A cave diver running a reel with guide line into the overhead environment. Cave diving is underwater diving in water-filled caves.The equipment used varies depending on the circumstances, and ranges from breath hold to surface supplied, but almost all cave diving is done using scuba equipment, often in specialised configurations with redundancies such as sidemount or backmounted twinset.