St Dunstan's Well Catchment

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St. Dunstan's Well Catchment
Site of Special Scientific Interest
Somerset UK location map.svg
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Location within Somerset
Location Somerset
Grid reference ST668475
Coordinates 51°13′33″N2°28′36″W / 51.2257°N 2.4768°W / 51.2257; -2.4768
InterestBiological and Geological
Area39.8 hectares (0.398 km2; 0.154 sq mi)
Notification 1967 (1967)
Natural England website

St. Dunstan's Well Catchment (grid reference ST668475 ) is a Site of Special Scientific Interest, covering 39.8 hectares (98.3 acres) near Stoke St Michael in the Mendip Hills, Somerset, England. The site was notified in 1967. It is of both geological and biological significance.

Contents

Formerly known as Stoke St Michael Slocker, it contains nine SSSI units consisting of rock and calcareous grassland. [1]

Geological

St Dunstan's Well Catchment is an important and well-known cave system which includes a series of spectacularly-decorated caves which in total extend to about 4 miles (6.4 km) of mapped passage. The caves at Fairy Cave Quarry were formed mainly by the erosive action of water flowing beneath the water-table at considerable pressure (so called 'phreatic' development), but as the water table has fallen many of the caves now lie well above it and the system now contains a variety of cave formations (stalagmites, stalactites and calcite curtains) which in their extent and preservation are amongst the best in Britain. Shatter Cave and Withyhill Cave are generally considered to be amongst the finest decorated caves in Britain in terms of their sheer abundance of pure white and translucent calcite deposits.

Biological

An area of nationally rare species-rich unimproved calcareous grassland of the Sheep's-fescue-Meadow Oat-grass type occurs in the field to the east of Stoke Lane Quarry. Small numbers of greater horseshoe bat (Rhinolophus ferrumequinum), lesser horseshoe bat (Rhinolophus hipposideros) and Natterer's bat (Myotis nattereri) hibernate in the cave system. [2]

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References

  1. "SSSI units for St. Dunstan's Well Catchment". Natural England. Retrieved 12 January 2014.
  2. "St. Dunstan's Well Catchment" (PDF). English Nature. Retrieved 20 July 2006.