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Thrupe Lane Swallet facts for kids

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Thrupe Lane Swallet
Location Croscombe, Somerset
OS grid ST603458
Depth 117 metres
Length 1417 metres
Geology Limestone
Cave survey Geological Conservation Review
Registry Mendip Cave Registry
Thrupe Lane Swallet
Site of Special Scientific Interest
Area of Search Somerset
Interest Geological
Notification 1992

Thrupe Lane Swallet 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.

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

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. 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. 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.

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.

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