of Oxfordshire Oxfordshire is a county in south-central England. Its landscape is characterised by two bands of hill ranges in the north and south of the county separated by a low-lying clay vale around the
River Thames. The northernmost point of the county is near Claydon Hay Farm,
Claydon at . This is where the Cherwell District of Oxfordshire meets the counties of Warwickshire and Northamptonshire. This northernmost area of Cherwell is within the
Northamptonshire Uplands (National Character Area 80), a range of ironstone-capped limestone hills and valleys. The area within the Northamptonshire Uplands includes the market town of
Banbury. South of the Uplands are the eastern extent of the
Cotswolds (NCA 107), a hill range forming part of a wider
oolitic limestone range across England known for its local stone. A large part of the wider Cotswolds within the county are in the protected Costwolds
National Landscape. Oxfordshire's westernmost point is in the Cotswolds NCA at , near Downs Farm,
Westwell. South of the Costwolds, Oxfordshire opens up into the undulating farmland of the
upper Thames clay vales (NCA 108). The clay vales encircle the
Midvale Ridge (NCA 109), a band of low-lying limestone hills running through the centre of the county. These two landscapes are the population centres of the county, containing Oxford itself as well as other key towns such as Witney, Bicester and Abingdon. To the south west of the county, the clay vales give way to the chalk hills of the
Berkshire and Marlborough Downs (NCA 116) south of
Wantage, known particularly for the
Uffington White Horse. The Downs form part of the
North Wessex Downs National Landscape. The Berkshire Downs extend to the Thames at Goring, east of which are further chalk hills in the
Chilterns (NCA 110), much of which is in the Chilterns National Landscape. South of the boundaries of the National Landscape are Oxfordshire's southernmost and easternmost points near the near Thames and Kennet Marina at
Playhatch () and
Shiplake () respectively. Long-distance walks within the county include the
Ridgeway National Trail,
Macmillan Way,
Oxfordshire Way and the D’Arcy Dalton Way.
Rivers and canals From the mid-point western edge to the southeast corner of Oxfordshire, via the city in the middle, runs the
Thames with its flat floodplains. This river forms the
historic limit with
Berkshire, remaining so on some lowest reaches. The
Thames Path National Trail follows the river from upper estuary to a source. Many smaller rivers in the county feed into the Thames, such as the
Thame,
Windrush,
Evenlode and
Cherwell. Some of these have trails running along their valleys. The
Oxford Canal links to the Midlands and follows the Cherwell from Banbury via Kidlington into the city of Oxford, where these join the navigable Thames. About 15% of the historically named
Wilts & Berks Canal, in sporadic sections, has been restored to navigability.
Green belt Oxfordshire contains a
green belt area that fully envelops the city of Oxford and extends for some miles to protect surrounding towns and villages from inappropriate development and urban growth. Its border in the east extends to the Buckinghamshire county boundary, while part of its southern border is shared with the North Wessex Downs
AONB. It was first drawn up in the 1950s, and all of the county's districts contain some portion of the belt.
Principal summits The following hills within the county have at least 30 metres of
topographic prominence: == Economy ==