The valley cuts through the Chiltern Hills in a north-west to south-east direction, the relatively narrow valley bottom is at 105m above sea level and rises up relatively steep sides to 180m to the plateau areas to the north and south.
The valley cuts through the Chiltern Hills in a north-west to south. East direction is at 105m above sea level. East direction rises up relatively steep sides to 180m to the plateau areas to the north and south. East direction is the relatively narrow valley bottom.