Priddy

Swildon's Hole is an extensive cave in Priddy, Somerset. At 9,144 metres (30,000 ft) 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 (SSSI). The upper series of the cave compresses many features into a relatively short space. The cave goes far beyond this, however, and the lower reaches of the cave continue to provide challenges for even the most experienced of cave divers. The name may be a corruption of Swithun, an Anglo-Saxon bishop of Winchester, as the land in the area was owned by St Swithin's Priory in Winchester.

Sandpit Hole and Bishop's Lot (grid reference ST531498) is a 1.8 hectare geological Site of Special Scientific Interest near Ebbor Gorge in Somerset, notified in 1987. This site consists of two of the largest isolated depressions, known as dolines, occurring in the Mendip limestone area, and both appear to have been formed by the limestones being dissolved by subterranean waters and the overlying rocks then collapsing into them.

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.On 28 August 1910 severe flooding rendered the boulder ruckles unstable, and the bottom of the cave was not reached again for another three years. The cavern was the site of a fatal accident in 1960, when Alan Hartnell was hit by rock-fall. Several areas of the boulder chokes remain unstable.Dolphin ladder pitch also suffered a rock fall and was blocked by a sofa-sized boulder in 1959, but the route was re-opened in 1966.The water resurges at Wookey Hole Caves 4 kilometres (2.5 mi) to the south, and 180 metres (590 ft) below the cave entrance.

Chancellor's Farm (grid reference ST525525) is a 34.2-hectare (84.6 acre) biological Site of Special Scientific Interest just north of Priddy in the Mendip Hills, Somerset, notified in 1984. The site, which is close to the Yoxter military range, is operated as a restricted-access nature reserve by the Somerset Wildlife Trust.This site provides outstanding examples of some of the grassland communities associated with the higher parts of the Mendip plateau. The soils include a mixture of wind-deposited silts and weathered material from the parent Carboniferous Limestone. The grassland is a type characterised by Sweet Vernal Grass (Anthoxanthum odoratum), Red Fescue (Festuca rubra), Common Bent (Agrostis capillaris), Pignut (Conopodium majus) and Sorrel (Rumex acetosa). Of particular interest is the abundance of Common Bluebell (Hyacinthoides non-scripta), a species rare outside woodland habitats in Somerset.The site includes extensive remains of lead mining from the medieval period to the early 18th century, with some evidence of iron mining in the north east corner of the site.

Priddy Caves (grid reference ST540505) is an Area: 67.6 hectare (167.0 acre) geological Site of Special Scientific Interest at Priddy in the Mendip Hills, Somerset, notified in 1965. The entrance to St Cuthbert's Swallet is incorporated in the adjacent Priddy Pools 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 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, St Cuthbert's Swallet and Eastwater Cavern exceed 100 metres in depth. Swildon's Hole is a world-famous example of a shallow depth phreatic cave, which shows a very well developed dendritic pattern of drainage and contains extensive clastic and stalagmite 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 geologists with the means to obtain a better understanding of the geological evolution of southern Britain during the ice ages.

Priddy Nine Barrows Cemetery and Ashen Hill Barrow Cemetery are a collection of round barrows, dating from the Bronze Age, near Priddy in the English county of Somerset. They are designated as ancient monuments.The barrows sit on crests of land at either end of a field in an area of the Mendip Hills with several Neolithic remains. They are assumed to be related to the Priddy Circles which lie 750 metres (2,460 ft) to the north. Ashen Hill consists of six bowl barrows and two bell barrows aligned east to west while Priddy Nine Barrows divided into one group of seven round barrows and another pair slightly separated from the others. Excavations in 1815 uncovered cremation burials and grave goods. A geophysical magnetometry survey suggested that there may have been three further barrows.

Ebbor Gorge is a limestone gorge in Somerset, England, designated and notified in 1952 as a 63.5-hectare (157-acre) biological Site of Special Scientific Interest in the Mendip Hills. It was donated to the National Trust in 1967 and is now managed by Natural England as a national nature reserve. The gorge was cut mostly into the Clifton Down Limestone, part of the Lower Carboniferous Pembroke Group, by water. The site was occupied by humans in the Neolithic Era and their tools and flint arrow heads have been discovered, along with pottery from the Bronze Age. There are also fossils of small mammals from the Late Devensian. The nature reserve provides a habitat for a variety of flora and fauna, including flowers, butterflies and bats.

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.It is named because of its location in the St Cuthbert Out parish of Wells, and was originally called St Cuthbert's Pot.

Brimble Pit and Cross Swallet Basins (grid reference ST512505) is a 154.3 hectare (381.3 acre) geological Site of Special Scientific Interest between Wookey Hole and Priddy in the Mendip Hills, Somerset, notified in 1987. The site covers the two adjacent karstic basins draining into Brimble Pit and Cross Swallet. These are the two best defined of the belt of large shallow closed depressions which account for the total Topography along the southern edge of the Mendip Hills. The Brimble Pit depression has a large old lake sediment floor now pitted with sinkholes, while the Cross Swallet Basin feeds to a single active sinkhole around which are well preserved terraces of both rock and sediment. Both depressions have marginal cols feeding to overflow channels now permanently dry. The site also contains important Pleistocene/Quaternary mammal remains within sediments infilling former caverns exposed on the north east face of Westbury Quarry.The swallet was excavated by William Stanton between 1991 & 1992 for spelaeological purposes. However, archaeological material was discovered, leading Stanton to separate the deposits he was removing and examine them for archaeological material, which included 42 sherds of Grooved Ware pottery and a polished greenstone axehead.The area is included in the Cook's Fields Nature Reserve run by the Somerset Wildlife Trust.The Site of Special Scientific Interest is divided into units by Natural England. The Church Commissioners own the land on which part of unit 1 is situated

Priddy Pools (grid reference ST545510) is a 52.7-hectare (130-acre) 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.

Priddy Circles are a linear arrangement of four circular earthwork enclosures near the village of Priddy on the Mendip Hills in Somerset, England. The circles have been listed as Scheduled Ancient Monuments, and described as 'probable Neolithic ritual or ceremonial monuments similar to a henge'.The southernmost Priddy Circle falls on adjoining land to a house and stables that are owned by retired businessman Roger Penny. In 2012 Penny was fined £10,000 after the earthwork was damaged by work he had permitted.

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). The caves have been used by humans for around 45,000 years, demonstrated by the discovery of tools from the Palaeolithic period, along with fossilised animal remains. Evidence of Stone and Iron Age occupation continued into Roman Britain. A corn-grinding mill operated on the resurgent waters of the River Axe as early as the Domesday survey of 1086. The waters of the river are used in a handmade paper mill, the oldest extant in Britain, which began operations circa 1610. The low, constant temperature of the caves means that they can be used for maturing Cheddar cheese. The caves were the site of the first cave dives in Britain, undertaken by Jack Sheppard and Graham Balcombe in the 1930s. Since then, divers have explored the extensive network of chambers developing breathing apparatus and novel techniques in the process. The full extent of the cave system is still unknown with approximately 4,000 metres (13,000 ft), including 25 chambers, having been explored. Part of the cave system opened as a show cave in 1927 following exploratory work by Herbert E. Balch. As a tourist attraction it has been owned by Madame Tussauds and, most recently, the circus owner Gerry Cottle. The cave is notable for the Witch of Wookey Hole, a roughly human-shaped stalagmite that legend says is a witch turned to stone by a monk from Glastonbury. It has also been used as a location for film and television productions, including the Doctor Who serial Revenge of the Cybermen.