Aston Rowant Cutting is a 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 of ...

south of

Aston Rowant Aston Rowant (anciently ''Aston Rohant'') is a village, civil parish and former manor about south of Thame in South Oxfordshire, England. The parish includes the villages of Aston Rowant and Kingston Blount, and adjoins Buckinghamshire to the ...

Oxfordshire Oxfordshire is a ceremonial and non-metropolitan county in the north west of South East England. It is a mainly rural county, with its largest settlement being the city of Oxford. The county is a centre of research and development, primarily ...

. It is a

Geological Conservation Review The Geological Conservation Review (GCR) is produced by the UK's Joint Nature Conservation Committee and is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological a ...

site. Aston Rowant Cutting, also known as the Stokenchurch Gap or Aston Hill cutting, or locally "The Canyon" is a steep

chalk Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Chalk ...

cutting Cutting is the separation or opening of a physical object, into two or more portions, through the application of an acutely directed force. Implements commonly used for wikt:cut, cutting are the knife and saw, or in medicine and science the scal ...

, constructed through the

Chiltern Hills The Chiltern Hills is a chalk escarpment in England. The area, northwest of London, covers stretching from Goring-on-Thames in the southwest to Hitchin in the northeast - across Oxfordshire, Buckinghamshire, Hertfordshire, and Bedfordshire. ...

on the border between

Buckinghamshire Buckinghamshire (), abbreviated Bucks, is a ceremonial county in South East England that borders Greater London to the south-east, Berkshire to the south, Oxfordshire to the west, Northamptonshire to the north, Bedfordshire to the north-ea ...

and

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

during the early 1970s for the

M40 motorway The M40 motorway links London, Oxford and Birmingham in England, a distance of approximately . The motorway is dual three lanes except for junction 1A to junction 3 (which is dual four lanes) a short section in-between the exit and entry slip-r ...

. It is long and a maximum of deep, and is located approximately from

High Wycombe High Wycombe, often referred to as Wycombe ( ), is a market town in Buckinghamshire, England. Lying in the valley of the River Wye surrounded by the Chiltern Hills, it is west-northwest of Charing Cross in London, south-southeast of Ayl ...

and close to the village of

Stokenchurch Stokenchurch is a village and civil parish in south-west Buckinghamshire, England. It is located in the Chiltern Hills, about south of Chinnor in Oxfordshire and west of High Wycombe. Stokenchurch is a commuter village, served by junction 5 of ...

. Despite the names, the cutting is in the parish of

Lewknor Lewknor is a village and civil parish about south of Thame in Oxfordshire.The civil parish includes the villages of Postcombe and South Weston. The 2011 Census recorded the parish's population as 663. Early history Iron Age and Roman era Two ...

rather than

. The cutting (along with the nearby village of

) is subject to frequent heavy fog during the winter months.

Cutting

The cutting provides the best exposure in central England dating to the

Coniacian The Coniacian is an age or stage in the geologic timescale. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series and spans the time between 89.8 ± 1 Ma and 86.3 ± 0.7 Ma (million years ago). The Coniacian is preceded by t ...

stage of the

Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the ...

, approximately 88 million years ago. It is part of the

Upper Chalk The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) which contains the Upper Cretaceous limestone succession in southern and eastern England. The same or similar rock sequences occur acr ...

succession, and at its base there is a fossil rich section which is important in defining the boundary between the Coniacian and the preceding

Turonian The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous Epoch, or a stage in the Upper Cretaceous Series. It spans the time between 93.9 ± 0.8 Ma and 89.8 ± 1 Ma (million years ago). The Turonian is preceded by t ...

stage.

Red kite The red kite (''Milvus milvus'') is a medium-large bird of prey in the family Accipitridae, which also includes many other diurnal raptors such as eagles, buzzards, and harriers. The species currently breeds in the Western Palearctic region o ...

s are commonly seen flying within the cutting or on the surrounding downland, making their return after their persecution by game keepers in

Victorian times In the history of the United Kingdom and the British Empire, the Victorian era was the period of Queen Victoria's reign, from 20 June 1837 until her death on 22 January 1901. The era followed the Georgian period and preceded the Edwardi ...

following a successful reintroduction programme organised by the

RSPB The Royal Society for the Protection of Birds (RSPB) is a Charitable_organization#United_Kingdom, charitable organisation registered in Charity Commission for England and Wales, England and Wales and in Office of the Scottish Charity Regulator, ...

and

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, ...

, which selected the Aston Rowant NNR as one of four initial sites in the UK for a captive release programme using birds brought in from

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

. The scheme has been so successful that the population has grown to over 200 pairs and is now self-generating and supplies birds for similar release programmes elsewhere in the UK. The cutting features prominently in the opening titles to the

BBC #REDIRECT BBC #REDIRECT BBC #REDIRECT BBC Here i going to introduce about the best teacher of my life b BALAJI sir. He is the precious gift that I got befor 2yrs . How has helped and thought all the concept and made my success in the 10th board ex ...

comedy series ''

The Vicar of Dibley ''The Vicar of Dibley'' is a British sitcom which originally ran on BBC One from 10 November 1994 to 1 January 2007. It is set in a fictional small Oxfordshire village called Dibley, which is assigned a female vicar following the 1992 changes ...

''.

References

External links

Further construction information of M40 Jct 5-8A

Live traffic camera showing northbound approach to the cutting with Christmas Common overbridge
{{SSSIs Oxfordshire Sites of Special Scientific Interest in Oxfordshire Geological Conservation Review sites Landforms of Oxfordshire Hills of Oxfordshire Transport in Oxfordshire Road cuttings in the United Kingdom Chiltern Hills