Thrupe Lane Swallet

Last updated
Thrupe Lane Swallet
Location Croscombe, Somerset
OS grid ST603458
Coordinates 51°12′38″N2°34′08″W / 51.21047°N 2.568998°W / 51.21047; -2.568998 Coordinates: 51°12′38″N2°34′08″W / 51.21047°N 2.568998°W / 51.21047; -2.568998
Depth117 metres
Length1417 metres
Geology Limestone
Cave survey Geological Conservation Review
RegistryMendip Cave Registry [1]
Thrupe Lane Swallet
Site of Special Scientific Interest
Area of Search Somerset
InterestGeological
Notification 1992

Thrupe Lane Swallet (grid reference ST603458 ) is a 0.5 hectares (1.2 acres) geological Site of Special Scientific Interest in Somerset, notified in 1992. It is also a Geological Conservation Review site.

Contents

The name Thrupe Lane comes from the nearby hamlet of Thrupe, which in Anglo-Saxon meant dairy farm. [2]

The swallet is a small, single pothole cave system that is dominated by a series of deep (117 metres (384 ft)) and mainly vertical passages, which follow fault lines, natural joints in the rock and mineral veins. [3] It shows a form of cave development not seen elsewhere in the Mendips and contains the tallest vertical shaft in any known cave on the Mendip Hills, Atlas Pot, which is 60 metres (197 ft) deep. [4] The stream that flows through the cave is one of those that feeds St Andrew's Wells in the grounds of the Bishop's Palace in Wells. [5]

Thrupe Lane Swallet was first entered in 1974 following digging by three caving groups. The entry shaft has been blasted open to ensure a stable entrance. [6]

See also

Related Research Articles

Wookey Hole Caves Series of limestone caverns in Somerset county, England

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).

River Axe (Bristol Channel)

The River Axe is a river in South West England. The river is formed by water entering swallets in the limestone and rises from the ground at Wookey Hole Caves in the Mendip Hills in Somerset, and runs through a V-shaped valley. The geology of the area is limestone and the water reaches Wookey Hole in a series of underground channels that have eroded through the soluble limestone. The river mouth is in Weston Bay on the Bristol Channel.

Burrington Combe

Burrington Combe is a Carboniferous Limestone gorge near the village of Burrington, on the north side of the Mendip Hills Area of Outstanding Natural Beauty, in North Somerset, England.

Banwell Ochre Caves

Banwell Ochre Caves are a 12.46-hectare geological Site of Special Scientific Interest near the village of Banwell, North Somerset, notified in 1983.

Banwell Caves

Banwell Caves are a 1.7-hectare geological and biological Site of Special Scientific Interest near the village of Banwell, North Somerset, England notified in 1963.

Lamb Leer

Lamb Leer is a 14.59 hectare geological Site of Special Scientific Interest between East Harptree and Priddy in the Mendip Hills, Somerset, notified in 1983. The cavern is a fragment of a very ancient major cave system which now contains one of the largest chambers in the Mendip Hills.

Brimble Pit and Cross Swallet Basins

Brimble Pit and Cross Swallet Basins is a 154.3 hectare geological Site of Special Scientific Interest between Wookey Hole and Priddy in the Mendip Hills, Somerset, notified in 1987.

Priddy Caves

Priddy Caves is an Area: 67.6 hectare geological Site of Special Scientific Interest at Priddy in the Mendip Hills, Somerset, notified in 1965.

Priddy Pools

Priddy Pools is a 52.7-hectare (130-acre) geological Site of Special Scientific Interest at Priddy in the Mendip Hills, Somerset, notified in 1972.

Caves of the Mendip Hills

The caves of the Mendip Hills are formed by the particular geology of the Mendip Hills: large areas of limestone worn away by water makes it a national centre for caving. The hills conceal the largest underground river system in Britain.

Eastwater Cavern

Eastwater Cavern is a cave near Priddy in the limestone of the Mendip Hills, in Somerset, England. It is also known as Eastwater Swallet. It was first excavated in April 1902 by a team led by Herbert E. Balch composed of paid labourers and volunteers from the Wells Natural History Society. Progress was initially slow, but by February 1903 Balch and Willcox had discovered substantial passage, following the streamway down to the bottom of the cave. Dolphin Pot was dug in 1940 by the Wessex Cave Club, with Primrose Pot following in 1950. West End series was the most recent significant discovery, in 1983.

St Cuthberts Swallet Cave in the Mendip Hills, Somerset, England

St Cuthbert's Swallet is the second longest, and most complex, cave on the Mendip Hills, in Somerset, England. It forms a major part of the Priddy Caves system and water entering this swallet re-emerges at Wookey Hole. St Cuthbert's Swallet is part of, and lies underneath, the Priddy Pools Site of Special Scientific Interest.

Shatter Cave

Shatter Cave is a cave in Fairy Cave Quarry, near Stoke St Michael in the limestone of the Mendip Hills, in Somerset, England. It falls within the St. Dunstan's Well Catchment Site of Special Scientific Interest.

Stoke Lane Slocker

Stoke Lane Slocker is a cave near Stoke St Michael, in the Carboniferous Limestone of the Mendip Hills, in the English county of Somerset.

Upper Flood Swallet

Upper Flood Swallet which was originally known as Blackmoor Flood Swallet, is an exceptionally well-decorated cave near Charterhouse, in the carboniferous limestone of the Mendip Hills, in Somerset, England. The cave is part of the Cheddar Complex SSSI.

Rods Pot

Rod's Pot is a limestone cave above Burrington Combe in the Mendip Hills, in Somerset, England.

Attborough Swallet is a cave in Chewton Mendip in Somerset, England.

Hunter's Hole is a cave in the Mendip Hills in Somerset, England. It is behind a pub, known as the Hunters Lodge Inn just outside Priddy where visitors can park. It is accessed via a permanent ladder, about 100m behind the pub in a small dip between some trees.

Manor Farm Swallet

Manor Farm Swallet is a cave in the limestone of the Mendip Hills, in Somerset, England which was subject to numerous failed digging attempts between 1947 and 1973 as the surface shafts kept collapsing. In 1973 access to the cave was gained by an artificial shaft and walling it against collapse.

References

  1. "Thrupe Lane Swallet". Mendip Cave Registry & Archive. Retrieved 2012-03-30.
  2. Witcombe, Richard (2009). Who was Aveline anyway?: Mendip's Cave Names Explained (2nd ed.). Priddy: Wessex Cave Club. p. 180. ISBN   978-0-9500433-6-4.
  3. "Thrupe Lane Swallet" (PDF). English Nature. Retrieved 2007-01-29.
  4. "Mendip Caves: Eastern Mendip". British Geological Survey. 2008. Retrieved 2009-02-06.
  5. "Thrupe Lane Swallet". Mendip Cave Registry & Archive. 2009. Retrieved 2012-03-30.
  6. Irwin, David John; Knibbs, Anthony J. (1999). Mendip Underground: A Cavers Guide. Bat Products. ISBN   0-9536103-0-6.—which also contains a detailed description of the cave.