Ebbor Gorge is a

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

gorge in

Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...

, England, designated and notified in 1952 as a

biological 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 of ...

in the Mendip Hills. It was donated to the

National Trust The National Trust, formally the National Trust for Places of Historic Interest or Natural Beauty, is a charity and membership organisation for heritage conservation in England, Wales and Northern Ireland. In Scotland, there is a separate and ...

in 1967 and is now managed by

Natural England Natural England is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. It is responsible for ensuring that England's natural environment, including its land, flora and fauna, ...

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 The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several p ...

Era and their tools and flint arrow heads have been discovered, along with pottery from the

Bronze Age The Bronze Age is a historic period, lasting approximately from 3300 BC to 1200 BC, characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization. The Bronze Age is the second prin ...

. 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.

Geology

Ebbor Gorge lies on the southwest-facing slope of the Mendip Hills and consists of a steep-sided ravine cut into 350-million-year-old

Carboniferous Limestone Carboniferous Limestone is a collective term for the succession of limestones occurring widely throughout Great Britain and Ireland that were deposited during the Dinantian epoch (geology), Epoch of the Carboniferous period (geology), Period. T ...

of the Dinantian. The gorge was cut into Clifton Down Limestone by meltwater in the

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...

Epoch In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured. The moment of epoch is usually decided by ...

. The lowest part of the gorge is formed in the Namurian Quartzitic Sandstone Group and the South Wales Lower Coal Measures, over which younger limestones have been thrust to the north-east, as demonstrated by the BGS maps (1:50,000 sheet 280, Wells). An example of the rare mineral mendipite was found at the head of the gorge. A stream issuing to the west of the site runs down the tributary valley of Hope Wood before joining the main gorge. The original watercourse which may have cut the gorge into the limestone became diverted underground and now emerges at

Wookey Hole Caves Wookey is a village and civil parish west of Wells, on the River Axe in the Mendip district of Somerset, England. The parish includes the village of Henton and the nearby hamlets of Yarley and Bleadney where the River Axe travels the length ...

to form the River Axe.

History

Various caves within the gorge were inhabited by

neolithic The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several p ...

people from which flint tools are held in the Wells and Mendip Museum. One particularly fine flint flake can be seen in the museum at King John's Hunting Lodge in

Axbridge Axbridge is a small town in Somerset, England, in the Sedgemoor district on the River Axe, near the southern edge of the Mendip Hills. The town's population according to the 2011 census was 2,057. History ''Axanbrycg'' is suggested as the sou ...

. Human and animal bones from the

were recovered from Outlook Cave in 1907. Bones from the

Palaeolithic The Paleolithic or Palaeolithic (), also called the Old Stone Age (from Greek: παλαιός ''palaios'', "old" and λίθος '' lithos'', "stone"), is a period in human prehistory that is distinguished by the original development of stone to ...

have been found at Savory's Hole. Several caves occur within the Gorge, of which Bridged Pot and Gully Cave provide some of the best Late Devensian small-mammal assemblages known from Britain. Most of the deposits remain in situ and include

steppe pika The steppe pika (''Ochotona pusilla'') is a small mammal of the pika family, Ochotonidae. It is found in the steppes of southern Russia and northern Kazakhstan. General description Ochotonidae includes only one genus - ''Ochotona'', formed by ...

Arctic lemming The Arctic lemming (''Dicrostonyx torquatus'') is a species of rodent in the family Cricetidae. Although generally classified as a "least concern" species, the Novaya Zemlya subspecies ''(Dicrostonyx torquatus ungulatus)'' is considered a vulner ...

Norway lemming The Norway lemming, also known as the Norwegian lemming (''Lemmus lemmus'') is a common species of lemming found in northern Fennoscandia, where it is the only vertebrate species endemic to the region. The Norway lemming dwells in tundra and fell ...

, various

vole Voles are small rodents that are relatives of lemmings and hamsters, but with a stouter body; a longer, hairy tail; a slightly rounder head; smaller eyes and ears; and differently formed molars (high-crowned with angular cusps instead of lo ...

red deer The red deer (''Cervus elaphus'') is one of the largest deer species. A male red deer is called a stag or hart, and a female is called a hind. The red deer inhabits most of Europe, the Caucasus Mountains region, Anatolia, Iran, and parts of we ...

and

reindeer Reindeer (in North American English, known as caribou if wild and ''reindeer'' if domesticated) are deer in the genus ''Rangifer''. For the last few decades, reindeer were assigned to one species, ''Rangifer tarandus'', with about 10 sub ...

finds include pottery from the

Beaker culture The Bell Beaker culture, also known as the Bell Beaker complex or Bell Beaker phenomenon, is an archaeological culture named after the inverted-bell beaker drinking vessel used at the very beginning of the European Bronze Age. Arising from a ...

, a stone axe and flint knife.

Current use

A area of the gorge is owned by the

, and managed by

as a national nature reserve. The land was donated to the National Trust by Mrs G.W. Hodgkinson, in 1967, in memory of

Winston Churchill Sir Winston Leonard Spencer Churchill (30 November 187424 January 1965) was a British statesman, soldier, and writer who served as Prime Minister of the United Kingdom twice, from 1940 to 1945 during the Second World War, and again from ...

. The site was purchased in 1931 by Wookey Hole Caves Ltd. The site is close to Wookey Hole village and

caves A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea ...

and offers views across the

Somerset Levels The Somerset Levels are a coastal plain and wetland area of Somerset, England, running south from the Mendips to the Blackdown Hills. The Somerset Levels have an area of about and are bisected by the Polden Hills; the areas to the south a ...

Glastonbury Tor Glastonbury Tor is a hill near Glastonbury in the English county of Somerset, topped by the roofless St Michael's Tower, a Grade I listed building. The entire site is managed by the National Trust and has been designated a scheduled monument. T ...

and beyond. There are three marked trails of varying lengths around the steeply wooded gorge, the longest being long, the shortest of which is suitable for wheelchair users.

Biology and ecology

Because of the ecology of the area was designated as a

in 1952. The ground

flora Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous (ecology), indigenous) native plant, native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' ...

is indicative of the calcareous nature of the site, with dog's mercury (''Mercurialis perennis'') being locally dominant. Many of the associated species are characteristic of

ancient woodland In the United Kingdom, an ancient woodland is a woodland that has existed continuously since 1600 or before in England, Wales and Northern Ireland (or 1750 in Scotland). Planting of woodland was uncommon before those dates, so a wood present in 16 ...

. Wood anemone (''Anemone nemorosa'') and

common bluebell ''Hyacinthoides non-scripta'' (formerly ''Endymion non-scriptus'' or ''Scilla non-scripta'') is a bulbous perennial plant, found in Atlantic areas from north-western Spain to the British Isles, and also frequently used as a garden plant. It is ...

(''Hyacinthoides non-scripta'') are both locally abundant. The valley of the main gorge is humid and provides ideal conditions for

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

and

fern A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes exce ...

s. It contains a substantial assemblage of

bryophyte The Bryophyta s.l. are a proposed taxonomic division containing three groups of non-vascular land plants (embryophytes): the liverworts, hornworts and mosses. Bryophyta s.s. consists of the mosses only. They are characteristically limited in s ...

s with over 120 species recorded including the nationally rare '' Bryum canariense'' and the very rare '' Amblystegiella confervoides''. The varied age and canopy structure of woodland encourages a high diversity of butterflies, nationally scarce species including the

white-letter hairstreak The white-letter hairstreak (''Satyrium w-album'') is a butterfly in the family Lycaenidae. Appearance and behaviour A dark little butterfly that spends the majority of its life in the tree tops, feeding on honeydew (secretion), honeydew, making ...

(''Strymonidia walbum'') and

high brown fritillary ''Fabriciana adippe'', the high brown fritillary, is a large and brightly colored butterfly of the family Nymphalidae, native to Europe and across the Palearctic to Japan. It is known for being Great Britain's most threatened butterfly and is li ...

(''Fabriciana adippe''), while species such as the

chalkhill blue The chalkhill blue (''Lysandra coridon'') is a butterfly in the family Lycaenidae. It is a small butterfly that can be found throughout the Palearctic realm, where it occurs primarily in grasslands rich in chalk. Males have a pale blue colour, wh ...

(''Lysandra coridon'') and brown argus (''Aricia agestis'') occur on the limestone grassland.

Greater horseshoe bat The greater horseshoe bat (''Rhinolophus ferrumequinum'') is an insectivorous bat of the genus '' Rhinolophus''. Its distribution covers Europe, Northern Africa, Central Asia and Eastern Asia. It is the largest of the horseshoe bats in Europe an ...

s (''Rhinolophus ferrumequinum'') and lesser horseshoes (''Rhinolophus hipposideros'') regularly use sites in the Gorge as hibernacular roosts. The site also supports

birds of prey Birds of prey or predatory birds, also known as raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates (mainly mammals, reptiles and other smaller birds). In addition to speed and strength, these predat ...

and a few red deer.

References

External links

website for th
Ebbor Gorge NNR
{{SSSIs Somerset biological Mendip Hills Sites of Special Scientific Interest in Somerset National Trust properties in Somerset National nature reserves in Somerset Canyons and gorges of England Sites of Special Scientific Interest notified in 1952