Survey of the earthworks on Stonehenge Down, including those in the immediate environs of Stonehenge, an area here termed the Triangle, was undertaken by the former Archaeological Survey and Investigation and Imaging Graphics and Survey teams of EH. This investigation recorded well preserved barrows but also revealed the presence of a number of examples previously thought to have been levelled, along with traces of part of the First World War Royal Flying Corps aerodrome. In addition, earthworks relating to cottages constructed for custodians were identified, along with a number of trackways, most of which were overlain by ridge and furrow, the result of cultivation during the 19th and 20th centuries. The investigation provides context for Stonehenge itself, which can now be seen as part of a complex of ceremonial monuments, including some which must have been contemporary with its early use.