Hellhole is a large, deep and — in the caving community — fabled pit cave in Germany Valley, eastern West Virginia. It is the 11th longest cave in the United States and is home to almost half of the world's population of Virginia big-eared bats. At 518 feet (158 meters), Hellhole is the deepest of several caves in the Valleycite web |url=http://www.nss2005.com/geology_sess.htm |title=Geology and Geography Session Abstracts : Speleogenesis Within an Anticlinal Valley: Hellhole Cave, West Virginia |year = 2005 | publisher=National Speleological Society |accessdate=2008-03-16 |format= |work=NSS Convention 2005|quote = Hellhole is an extensive (32 km) cave system developed within Germany Valley (Pendleton County, West Virginia) on the flank of the Wills Mountain Anticline. It is the most extensive of several mapped caves in the area (others include Memorial Day Cave and Schoolhouse Cave). Hellhole is one of the deepest caves in the valley 518 feet (158 m). ] .

Hellhole has had a long and storied association with the National Speleological Society dating back to the creation of that organization in the 1940s. Many basic caving techniques (e.g., the single rope technique) were developed in Hellhole's 154-foot (47 meter) entrance drop.


The only known entrance to Hellhole is a funnel-shaped pit entrance on the lower slopes of North Fork Mountain. Descent by rope through this spectacular and storied convert|154|ft|m|sing=on entrance shaft gives access to a vast chamber ??? feet long. From the time exploration began there in the 1940s, cavers have documented over convert|28|mi|km of mapped passage in the Hellhole system.

"Little Hellhole" is a well known pit deeper in the cave.

Hellhole's passages are developed predominantly in a layer of limestone known as the New Market. This same limestone is of remarkable commercial quality and is the primary object of the nearby Greer Lime Company open pit mining operations.


Bat biology at Hellhole

Hellhole is a hibernaculum site for two endangered and federally protected species of bats. For the Virginia big-eared bat ("Corynorhinus townsendii virginianus"), it is one of the largest hibernation sites in the world. There are estimated to be about 9,000 individuals in the cave, as against a total world population of about 20,000. Thus, Hellhole contains about 45% of the world's total population. The cave is the largest hibernation site in the mid-Atlantic region for the Indiana bat ("Myotis sodalis"). The cave contains about 9,000 of these as well, many more than any other cave in the region. In addition, the cave is one of the world’s three or four largest hibernation sites for Little brown bats ("Myotis lucifugus"), containing over 100,000 individual bats. Finally, the cave is also home to at least four other bat species.

The crucial factor in Hellhole’s status as a world class bat habitat is its low ambient air temperature. Most caves in West Virginia average around convert|57|°F|°C but Hellhole's average is closer to 47 degrees. Located in the middle of an enclosed valley, and, most importantly, having only one entrance, all the cold air that flows off North Fork Mountain each winter collects and becomes trapped in the cave. The cold air sinks and, having no lower entrance through which to escape, fills the cave's massive passages. This natural cold air trap may be unique and, activists contend, is the reason why the cave is so vulnerable to accidental damage from quarrying activities. If this natural cold air trap were to be breached at an elevation lower than the entrance, cold air would flow out, thus destroying the cave as a vast bat hibernaculum.

Other species in the cave

Hellhole contains two rare cave invertebrates, both of which are millipedes: the Germany Valley Cave Millipede and the Luray Caverns Blind Cave Millipede.


From the 1940s, when exploration of Hellhole began, to the 1980s, cavers had mapped approximately convert|8.5|mi|km of passage in the popular Hellhole system. The cave is developed in New Market Limestone, the same rock unit that is mined in the nearby open pit quarry.

Hellhole was essentially closed to the caving community in 1988, two years after a lease on the land including its entrance was obtained by the Greer Limestone Plant, a part of Greer Industries, Inc. in the nearby town of Riverton. The only exception to this was the bi-annual bat counts sponsored by the United States Fish and Wildlife Service (USFWS). In 2002, after prolonged negotiations with Greer (which in 2000 had proposed in public documents to expand its operations to the north and south of its existing open pit quarry), the USFWS, West Virginia Department of Natural Resources (WV DNR), West Virginia Department of Environmental Protection (WV DEP), caving organizations and local landowners, the Germany Valley Karst Survey (GVKS) was contracted to pursue a survey of the extent of the cave.

The entrance to Hellhole is owned by a private landowner who has never wished to sell the land around it. The quarry, immediately to the west of the cave entrance, is operated by Greer Limestone Company (owned by West Virginia businessman and politician John Raese). Greer leased the entrance to Hellhole from the landowner in 1986, and as the leasee, soon began to deny most access to the cave. Greer did allow the West Virginia Division of Natural Resources (WV DNR) to conduct bi-annual trips into the cave for the purpose of counting the populations of endangered bat species. In the 1990’s, at urging of the WV DNR, Greer also began to allow limited exploration and mapping of the cave (one or two trips per year).

In accordance with USFWS requirements regarding endangered bats, all annual survey activities have to be completed within a 16-week window during the summer months. In a feat of epic caving over the next three years (2002-2005), members of the GVKS surveyed more than convert|12|mi|km of virgin passage, increasing the known length of the cave from 8.5 miles (13.7 kilometers) to 20.3 miles (32.7 kilometers), and established Hellhole as the deepest cave drop in West Virginia -- 265 feet (81 m). Subsequent investigations extended these numbers to 28.28 mapped miles (45.50 kilometers) and 519 feet (158.2 m) of depth.

In 1995 an extension to the cave (“Krause Hall”) was discovered in the extreme northwest portion of the cave. In 1996 one of the deepest sections of the cave was explored at over convert|400|ft|m below the entrance elevation. In 1997, a break-through discovery off this area extended the known extent of Hellhole well to the south of its originally known range. This showed that the historically known portions of Hellhole were a mere side passage to a much larger cave system.

By this time the U.S. Fish and Wildlife Service had recognized Hellhole as a critical habitat for two species of endangered (and federally protected) bat, the Indiana bat ("Myotis sodalis") and the Virginia big-eared bat ("Corynorhinus townsendii virginianus"). It was known that about 45% of the world’s estimated 20,000 remaining Virginia big-eared bats hibernate in Hellhole. Greer had responded by establishing a no-work buffer zone of convert|250|ft|m and a no-blast buffer zone of convert|500|ft|m from the nearest known passage in Hellhole. That word “known” proved to be the bone of contention.

The reason Hellhole is such an important cave for these bats is its unusually low ambient air temperature. Most caves in West Virginia average around convert|57|°F|°C. Hellhole averages around 47 degrees. This cold temperature is critical for these species survival. The cave remains cool because it functions as a natural cold air trap. Located in the middle of an enclosed valley, and having only one entrance, all cold air flowing off North Fork Mountain in winter collects in the cave. Cold air goes down, and having no place to escape, stays down, filling the cave's massive passages. This cold air collecting phenomenon is what makes the cave so vulnerable to accidental damage from quarrying activities. If this natural cold air trap were to be breached at an elevation lower than the entrance, the cold air would quickly flow out, and the cave would likely no longer function as a bat hibernaculum, at least for these particular species.

With the advent of the 1997 discoveries, Greer was threatened with the potential loss of a valuable section of limestone to the endangered species habitat. From that point forward Greer permitted no further exploration of Hellhole. Cavers perceived that because the quarry did not wish to lose any further areas of limestone to bat habitat, it effectively began to impede further exploration and, therefore, "knowledge" of the cave's extent.

In 2000, Greer announced its intention to seek a renewal permit to continue its quarrying operations in Germany Valley and to extend them to the north and south of the existing open pit. This request was filed publicly, as required by the West Virginia Department of Environmental Protection (WV DEP) requirements, and it ignited a furor among Virginia and West Virginia cavers who began petitioning officials and started a letter campaign. In their view, it was highly likely that quarry operations, conducted with a lack of knowledge regarding the cave's complete extent, would in time penetrate some portion of the cave. Such an event, it was argued, would have disastrous effects upon the suitability of the cave as an endangered bat species hibernaculum. In 2002 -- after prolonged negotiations with Greer -- the USFWS, West Virginia Department of Natural Resources (WV DNR), WV DEP, caving organizations and local landowners, the Germany Valley Karst Survey (GVKS) was formally contracted to survey the extent of the Hellhole cave system. In accordance with USFWS requirements regarding endangered bats, all annual survey activities must be completed within a 16-week window during the summer months. Since that time, the known extent of the cave has expanded to 24.9 mapped miles (40.1 kilometers) and 519 feet (158.2 m) of depth.


* According to the NSS Geo2 Committee on Long and Deep Caves [http://www.caverbob.com/wlong.htm] (updated 05 September 2007), Hellhole is the 58th longest cave in the world.

External links

* [http://www.psc-cavers.org/gvks/hellhole.html Germany Valley Karst Survey Website (Hellhole webpage)]
* [http://www.caverbob.com/usalong.htm List of longest US caves]



Other sources

* Dasher, George R. (2001), Bulletin #15, "The Caves and Karst of Pendleton County", West Virginia Speleological Survey.

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