Wookey Hole Caves are a series of limestone caverns, a show cave and tourist attraction in the village of Wookey Hole on the southern edge of the Mendip Hills near Wells in Somerset, England. The River Axe flows through the cave. It is a Site of Special Scientific Interest (SSSI) for both biological and geological reasons. Wookey Hole cave is a "solutional cave", one that is formed by a process of weathering in which the natural acid in groundwater dissolves the rocks. Some water originates as rain that flows into streams on impervious rocks on the plateau before sinking at the limestone boundary into cave systems such as Swildon's Hole, Eastwater Cavern and St Cuthbert's Swallet; the rest is rain that percolates directly through the limestone. The temperature in the caves is a constant 11 °C (52 °F).
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.
Saint Ann is the largest parish in Jamaica. It is situated on the north coast of the island, in the county of Middlesex, roughly halfway between the eastern and western ends of the island. It is often called "the Garden Parish of Jamaica" on account of its natural floral beauty. Its capital is Saint Ann's Bay. Saint Ann comprises New Seville, the first Spanish settlement in Jamaica.
Saint Catherine is a parish in the south east of Jamaica. It is located in the county of Middlesex, and is one of the island's largest and most economically valued parishes because of its many resources. It includes the first capital of Jamaica, Spanish Town, originally known as San Jago de la Vega or Santiago de la Vega.
Saint Elizabeth, one of Jamaica's largest parishes, is located in the southwest of the island, in the county of Cornwall. Its capital, Black River, is located at the mouth of the Black River, the widest on the island.
Sarawak Chamber is the largest known cave chamber in the world by area and the second largest by volume after the Miao Room in China. It is in Gua Nasib Bagus, which is located in Gunung Mulu National Park in the Malaysian Territory of Sarawak on the island of Borneo.
The Marble Arch Caves are a series of natural limestone caves located near the village of Florencecourt in County Fermanagh, Northern Ireland. The caves are named after the nearby Marble Arch, a natural limestone arch at the upstream end of Cladagh Glen under which the Cladagh River flows. The caves are formed from three rivers draining off the northern slopes of Cuilcagh mountain, which combine underground to form the Cladagh. On the surface, the river emerges from the largest karst resurgence in Ireland, and one of the largest in the United Kingdom. At 11.5 kilometres (7.1 mi) the Marble Arch Caves form the longest known cave system in Northern Ireland, and the karst is considered to be among the finest in the British Isles.
Usain St. Leo Bolt is a Jamaican retired sprinter, widely considered to be the greatest sprinter of all time. He is the world record holder in the 100 metres, 200 metres, and 4 × 100 metres relay.
The Dolmen of Menga is a megalithic burial mound called a tumulus, a long barrow form of dolmen, dating from 3750–3650 BCE approximately. It is near Antequera, Málaga, Spain.
The Jamaican Caves Organisation (JCO) is an all-volunteer caving organisation devoted to the preservation, exploration and documentation of caves in Jamaica. It is currently the only non-profit group in Jamaica dedicated to education, research and advocacy about caves.
Coffee River Cave is a large river cave in Manchester Parish in west-central Jamaica. It is 2,800 metres (9,200 ft) in length and at an elevation of 250 metres (820 ft).
At nearly 200 metres, Smokey Hole Cave in Manchester, Jamaica is the deepest known cave in the island.
Hutchinson's Hole is a large sinkhole named after the 18th century serial killer Lewis Hutchinson, who used the sinkhole to dispose of bodies. Its depth is approximately 98 metres (322 ft), with a cave entrance some 5 by 3 metres widening to approximately 18 by 25 metres at the bottom.
At 186 metres (610 ft), Morgans Pond Hole in Manchester Parish, Jamaica is the second deepest known cave in the island.
Charterhouse Cave, on the Mendip Hills in Somerset, is the deepest cave in southern England.
The Cave Divers Association of Australia (CDAA) is a cave diving organisation which was formed in September 1973 to represent the interests of recreational scuba divers who dive in water‐filled caves and sinkholes principally in the Lower South East of South Australia (SA) and secondly in other parts of Australia. Its formation occurred after a series of diving fatalities in waterfilled caves and sinkholes in the Mount Gambier region between 1969 and 1973 and in parallel to a Government of South Australia inquiry into these deaths. The CDAA's major achievement has been the dramatic reduction of fatalities via the introduction of a site rating scheme and an associated testing system which was brought in during the mid-1970s. While its major area of operation is in the Limestone Coast region of SA, it administers and supports cave diving activity in other parts of Australia including the Nullarbor Plain and Wellington, New South Wales.
Reservoir Hole is a cave in Cheddar Gorge in Somerset, southwest England. It contains what is believed to be the largest chamber yet found under the Mendip Hills.
Short Drop Cave and Gavel Pot are different entrances into the same cave system on Leck Fell, in Lancashire, England. The main top entrance, Short Drop Cave, is a small hole in a fenced off shakehole near the main stream sink; Gavel Pot, a window into the system, is a large fenced shakehole some 40-metre (130 ft) deep requiring tackle to descend. There are two other smaller entrances into Short Drop Cave. At its base the system links via a sump with Lost Johns' Cave, and is part of the Three Counties System, an 87 kilometres (54 mi) cave system which spans the borders of Cumbria, Lancashire, and North Yorkshire.
Death's Head Hole is a cave on Leck Fell, in Lancashire, England. Its entrance is a 64-metre (210 ft) deep shaft. It leads into Lost Johns' Cave and is part of the Three Counties System, an 87-kilometre (54 mi) cave system which spans the borders of Cumbria, Lancashire, and North Yorkshire.
