A cave or cavern is a natural void under the Earth's surface. Caves often form by the weathering of rock and often extend deep underground. Exogene caves are smaller openings that extend a relatively short distance underground. Caves which extend further underground than the opening is wide are called endogene caves.
Malham Cove is a large curved limestone formation 0.6 miles (1 km) north of the village of Malham, North Yorkshire, England. It was formed by a waterfall carrying meltwater from glaciers at the end of the last Ice Age more than 12,000 years ago. Today it is a well-known beauty spot and rock climbing crag within the Yorkshire Dales National Park. A large limestone pavement lies above the cove.
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are also known as shakeholes, and to openings where surface water enters into underground passages known as ponor, swallow hole or swallet. A cenote is a type of sinkhole that exposes groundwater underneath. Sink and stream sink are more general terms for sites that drain surface water, possibly by infiltration into sediment or crumbled rock.
A subterranean river is a river or watercourse that runs wholly or partly beneath the ground, one where the riverbed does not represent the surface of the Earth. It is distinct from an aquifer, which may flow like a river but is contained within a permeable layer of rock or other unconsolidated materials. A river flowing below ground level in an open gorge is not classed as subterranean.
The mountains of Whernside, Ingleborough and Pen-y-ghent are collectively known as the Three Peaks. The peaks, which form part of the Pennine range, encircle the head of the valley of the River Ribble in the Yorkshire Dales National Park in the North of England.
Ingleton is a village and civil parish in North Yorkshire, England. The village is 17 miles (27 km) from Kendal and 17 miles (27 km) from Lancaster on the western side of the Pennines. It is 9 miles (14 km) from Settle. The River Doe and the River Twiss meet to form the source of the River Greta, a tributary of the River Lune. The village is on the A65 road and at the head of the A687. The B6255 takes the south bank of the River Doe to Ribblehead and Hawes. All that remains of the railway in the village is the landmark Ingleton Viaduct. Arthur Conan Doyle was a regular visitor to the area and was married locally, as his mother lived at Masongill from 1882 to 1917. It has been claimed that there is evidence that the inspiration for the name Sherlock Holmes came from here.
Scar End is a settlement on the side of Twisleton Scar in the English county of North Yorkshire.
Rumbling Hole is a cave on Leck Fell, in Lancashire, England. Its entrance is a 50-metre (160 ft) deep fenced shaft, and it rapidly descends a series of pitches to a low aqueous passage that has been connected to Lost Johns' Cave. It is part of the Three Counties System, an 87-kilometre (54 mi) cave system that spans the borders of Cumbria, Lancashire, and North Yorkshire.
Named after Eli Simpson, Simpson Pot is a limestone cave in West Kingsdale, North Yorkshire, England. It leads into Swinsto Cave and thence into Kingsdale Master Cave, and it is popular with cavers as it is possible to descend it by abseiling down the pitches, retrieving the rope each time, and exiting through Valley Entrance of Kingsdale Master Cave at the base of the hill. It is part of a 27-kilometre (17 mi) long cave system that drains both flanks of Kingsdale.
An underground lake is a lake underneath the surface of the Earth. Most naturally occurring underground lakes are found in areas of karst topography, where limestone or other soluble rock has been weathered away, leaving a cave where water can flow and accumulate.
The Craven Fault System is the name applied by geologists to the group of crustal faults in the Pennines that form the southern edge of the Askrigg Block and which partly bounds the Craven Basin. Sections of the system's component faults which include the North, Middle and South Craven faults and the Feizor Fault are evident at the surface in the form of degraded faults scarps where Carboniferous Limestone abuts millstone grit. The fault system is approximately coincident with the southwestern edge of the Yorkshire Dales National Park and the northeastern edge of the Bowland Fells.
Aquamole Pot is a limestone cave in West Kingsdale, North Yorkshire, England. It was originally discovered by cave divers who negotiated 168 metres (551 ft) of sump passage from Rowten Pot in 1974, to enter a high aven above the river passage. All subsequent major explorations were undertaken from below before an entrance was opened up from the surface. It is part of a 27-kilometre (17 mi) long cave system that drains both flanks of Kingsdale.
Skirwith Cave is a major resurgence solutional cave on Ingleborough in Chapel-le-Dale, North Yorkshire, England; it was a show cave between 1964 and 1974. It is no longer open to the public but is still visited by cavers. It lies within the designated Ingleborough Site of Special Scientific Interest.
Weathercote Cave is a natural solutional cave in Chapel-le-Dale, North Yorkshire, England. It has been renowned as a natural curiosity since the eighteenth century, and was accessible to paying visitors until 1971. The entrance is a large shaft about 20 metres (66 ft) deep, dominated by a waterfall entering at one end. It lies within the designated Ingleborough Site of Special Scientific Interest.
Yordas Cave is a solutional cave in Kingsdale, North Yorkshire, England. It has been renowned since the eighteenth century as a natural curiosity, and was a show cave during the nineteenth century. It is now a popular destination for cavers, walkers, and outdoor activity groups.
The Three Counties System is a set of inter-connected limestone solutional cave systems spanning the borders of Cumbria, Lancashire and North Yorkshire in the north of England. The possibility of connecting a number of discrete cave systems in the area to create a single super-system that spans the county borders was first proposed by Dave Brook in 1968, and it was achieved in 2011. The system is currently about 90 kilometres (56 mi) long, making it the longest in the UK and the thirty-fourth longest in the world, and there continues to be scope for considerably extending the system.
Swinsto Cave is a limestone cave in West Kingsdale, North Yorkshire, England. It leads into Kingsdale Master Cave and it is popular with cavers as it is possible to descend by abseiling down the pitches, retrieving the rope each time, and exiting through Valley Entrance of Kingsdale Master Cave at the base of the hill. It is part of a 27-kilometre (17 mi) long cave system that drains both flanks of Kingsdale.
Jingling Pot is a limestone cave in West Kingsdale, North Yorkshire, England. Located adjacent to Jingling Beck, it is a lenticular-shaped 45-metre (148 ft) deep shaft that descends straight from the surface. At the bottom the rift extends to the north and descends steeply into a further chamber, at the end of which the initials of the original explorers may be seen scratched into the rock. A narrow shaft in this second chamber drops into a complex of small crawls and rifts, which approach close to a passage in the One-armed Bandit Series of Aquamole Pot. A second set of shafts descend parallel to the surface shaft. These can be entered through a rock window a little way below the entrance.
The Long Kin East Cave - Rift Pot system is a limestone cave system on the southern flanks of Ingleborough, North Yorkshire in England lying within the designated Ingleborough Site of Special Scientific Interest. Long Kin East Cave starts as a long meandering stream passage but then plummets down a 58-metre (190 ft) deep shaft when it meets a shattered fault into which Rift Pot also descends. At the bottom, the stream flows through some low canals and sumps, to eventually emerge at Austwick Beck Head in Crummackdale.
Chapel-le-Dale is west-facing valley in the Yorkshire Dales, England. The U-shaped valley of Chapel-le-Dale is one of the few which drain westwards towards the Irish Sea, however, the river that flows through the valley has several names with the Environment Agency and the Ordnance Survey listing it as the River Doe. However, some older texts insist the name of the watercourse through the dale is the River Greta, which runs from a point below the hamlet of Chapel-le-Dale, and onwards past Ingleton. The dale is sparsely populated with only one settlement, the hamlet of Chapel-le-Dale, which has a small chapel.
