West Woods is an area of Forestry Commission woodland about 3km x 2km in size, located about 2.5km southwest of Marlborough. The Wansdyke runs through it and there is an enormous long barrow in the south east quadrant.
It's criss-crossed by a number of tracks and trails with two main valleys that divide the plateau into four pieces. This plateau is the usual chalk bedrock, with a clay-with-flints covering and - crucially - parts of it had a sarsen covering.