Priddy Caves () is an Area: 67.6

hectare The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...

(167.0 acre)

geological Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain, or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland, is a conservation designation denoting a protected area in the United Kingdom and Isle ...

Priddy Priddy is a village in Somerset, England in the Mendip Hills, close to East Harptree and north-west of Wells, Somerset, Wells. The village lies in a small hollow near the summit of the Mendip range of hills, at an elevation of above sea-leve ...

in the

Mendip Hills The Mendip Hills (commonly called the Mendips) is a range of limestone hills to the south of Bristol and Bath, Somerset, Bath in Somerset, England. Running from Weston-super-Mare and the Bristol Channel in the west to the River Frome, Somerset ...

Somerset Somerset ( , ), Archaism, archaically Somersetshire ( , , ) is a Ceremonial counties of England, ceremonial county in South West England. It is bordered by the Bristol Channel, Gloucestershire, and Bristol to the north, Wiltshire to the east ...

, notified in 1965. The entrance to

St Cuthbert's Swallet 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. – which also cont ...

is incorporated in the adjacent

Priddy Pools Priddy Pools () is a geological Site of Special Scientific Interest at Priddy in the Mendip Hills, Somerset, notified in 1972. The pools provided the water supply for the Priddy Mineries which is now a Nature Reserve. Biological This sit ...

SSSI. The Priddy Caves System contains about 16 km of surveyed cave passages divided between a number of major and minor networks. All the caves are

sink hole 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 ...

systems, fed by sink holes at the ground surface. In all the caves, the detailed disposition and form of the passages can be seen clearly to have followed marked lines of natural weakness in the rocks. The three largest networks,

Swildon's Hole Swildon's Hole is an extensive cave in Priddy, Somerset. At in length, it is the longest cave on the Mendip Hills. It has been found to be connected to Priddy Green Sink and forms part of the Priddy Caves Site of Special Scientific Interest (S ...

and

Eastwater Cavern Eastwater Cavern is a cave near Priddy in the limestone of the Mendip Hills, in Somerset, England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of ...

exceed 100 metres in depth.

is a world-famous example of a shallow depth

phreatic ''Phreatic'' is a term used in hydrology to refer to aquifers, in speleology to refer to cave passages, and in volcanology to refer to a type of volcanic eruption. Hydrology The term phreatic (the word originates from the Greek , meaning "well" ...

cave, which shows a very well developed

dendritic Dendrite derives from the Greek word "dendron" meaning ( "tree-like"), and may refer to: Biology *Dendrite, a branched projection of a neuron *Dendrite (non-neuronal), branching projections of certain skin cells and immune cells Physical *Dendri ...

pattern of drainage and contains extensive

clastic Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus,Essentials of Geology, 3rd Ed, Stephen Marshak, p. G-3 chunks, and smaller grains of rock broken off other rocks by ...

and

stalagmite A stalagmite (, ; ; ) is a type of rock formation that rises from the floor of a cave due to the accumulation of material deposited on the floor from ceiling drippings. Stalagmites are typically composed of calcium carbonate, but may consist ...

fills. Hunter's Hole is an excellent example of a shaft complex draining a closed depression. This cave differs from the others at Priddy in apparently not having formed as a stream swallet. Cave sediments found within the systems, together with the information which can be deduced from the physical form of the caves, provide

geologist A geologist is a scientist who studies the structure, composition, and History of Earth, history of Earth. Geologists incorporate techniques from physics, chemistry, biology, mathematics, and geography to perform research in the Field research, ...

s with the means to obtain a better understanding of the geological evolution of southern Britain during the

ice ages An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and Gre ...

References

External links

Priddy Caves in GCR database
{{SSSIs Somerset geological Caves of the Mendip Hills Sites of Special Scientific Interest in Somerset Sites of Special Scientific Interest notified in 1965 Limestone caves