- St. Dunstan's Well Catchment
Infobox SSSI
name=St. Dunstan's Well Catchment
aos=Somerset
interest=Biological and Geological
gridref=gbmappingsmall|ST668475
area=convert|39.8|ha|acre|1
notifydate=1967http://www.natureonthemap.org.uk/map.aspx?
]
St. Dunstan's Well Catchment (gbmapping|ST668475) is a
biological Site of Special Scientific Interest , covering convert|39.8|ha|acre|1 nearStoke St Michael in theMendip Hills ,Somerset , notified in 1967.Formerly known as Stoke St Michael Slocker.
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 of mapped passage. The caves at
Fairy Cave Quarry were formed mainly by the erosive action ofwater 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 (stalagmite s,stalactites andcalcite curtains) which in their extent and preservation are unsurpassed in Britain.Shatter Cave andWithyhill Cave are generally considered to be 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") andNatterer's bat ("Myotis nattereri") hibernate in the cave system. [cite web | title=St. Dunstan's Well Catchment | work=English Nature | url=http://www.english-nature.org.uk/citation/citation_photo/1000377.pdf | format=PDF | accessdate=2006-07-20]References
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