| Seneca Caverns | |
|---|---|
 A subterranean gallery in Seneca Caverns. | |
| Location | Flat Rock, Ohio |
| Depth | Unknown |
| Length | Unknown |
| Discovery | 1872 |
| Geology | Columbus Limestone and Lucas Dolomite |
| Entrances | One |
| Access | Fee |
Seneca Caverns is a show cave located in northeastern Seneca County, Ohio, USA, just outside Flat Rock. The cave is designated as a Registered Natural Landmark by the Ohio Department of Natural Resources.
The cave was discovered in June 1872 by two boys named Peter Rutan and Henry Homer while they were hunting rabbits with their dog. The dog chased a rabbit into a brush pile, where they then disappeared. While searching through the brush pile, the two boys found an opening, fell through it, and landed in the first level of the cave, where they found their dog. The boys returned home and told everyone about their discovery. The cave became known as Good's Cave, named for Emmanuel Good, the owner of the farm on which the cave was located. [1]
In 1931, Don Bell, a lawyer from Bellevue, discovered a series of passageways and rooms in the cave which led to an underground river, called Ole' Mist'ry River, which is part of the vast groundwater system that underlies the surrounding region. After two and a half years of improvement effort, the cave was renamed Seneca Caverns and opened to the public on May 14, 1933.
There are 7 levels that are open to the public
There are lower levels that have only been explored during severe droughts
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word cave can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called exogene caves. Caves which extend further underground than the opening is wide are called endogene caves.
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The 1973 Mount Gambier cave diving accident was a scuba diving incident on 28 May 1973 at a flooded sinkhole known as "The Shaft" near Mount Gambier in South Australia. The incident claimed the lives of four recreational scuba divers: siblings Stephen and Christine M. Millott, Gordon G. Roberts, and John H. Bockerman. The four divers explored beyond their own planned limits, without the use of a guideline, and subsequently became lost, eventually exhausting their breathing air and drowning, with their bodies all recovered over the next year. To date, they are the only known fatalities at the site. Four other divers from the same group survived.
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. Recreational cave diving is generally considered to be a type of technical diving due to the lack of a free surface during large parts of the dive, and often involves planned decompression stops. A distinction is made by recreational diver training agencies between cave diving and cavern diving, where cavern diving is deemed to be diving in those parts of a cave where the exit to open water can be seen by natural light. An arbitrary distance limit to the open water surface may also be specified. Despite the risks, water-filled caves attract scuba divers, cavers, and speleologists due to their often unexplored nature, and present divers with a technical diving challenge.
