The existence of two prehistoric sites close on the south-west side of Salisbury was first demonstrated by Mr O. G. S. Crawford, F.S.A., from a chance air-photograph taken by Pilot-Officer Jonas, R.A.F. (Antiquity, III, 452). They are now called Woodbury I and II from a field name. The smaller of the two sites, Woodbury II, was selected for excavation by the Prehistoric Society because its size (diameter 150 m.) made its complete examination financially feasible and its clear markings promised good results. The site lies in the parish of Britford on high ground overlooking the Avon valley from the south-west, one mile west-south-west of Britford parish church. The ground is flat about 280 feet above sea level, and the site is set well back from the edge of the descent into the water meadows of the valley.

It was tested in March 1938 by Mr C. W. Phillips, F.S.A., who proved that the dark band of the enclosure revealed by the air-photograph (pl. LVII) was a ditch of V-shaped section. His discovery of Iron Age ‘A’ pottery in the silting suggested that the site belonged to this culture.

The aim of the Prehistoric Society in undertaking the investigation of this site has been to excavate it in its entirety. Such a work might be expected to fulfil two objects:

(a) by excavating the site completely many problems raised by the numerous partial excavations of analogous sites might be solved. In particular, profiting by previous experience in Germany, it was hoped to reveal something of the nature of such settlements and of the social organisation which they imply.

(b) the investigation might be expected to throw some fresh light on the interpretation of markings on air-photographs.

The restricted area of the site and the shallowness of the surface soil revealed by Mr Phillips's test made it particularly favourable for this kind of work, while the strong probability of building development in the near future lent urgency to the task.