Evaluation work carried out on the site in 2006 identified extensive archaeology. There is evidence of Bronze Age, Iron Age and Roman occupation on the site, including a Romano-British settlement near the River Cam.
Aerial photographs revealed up to three ring-ditch monuments, thought to be Neolithic. Pottery fragments were found in the largest of the three monuments which seemed to date from around 5,200 to 4,600 years ago. Carbon-dating is underway to prove this.
The main period dominating this part of the landscape is the Iron Age (c 800BC - 50AD). Excavation on the Park & Ride site in 2000 revealed more than 600 pits, and the current excavation has at least a similar number. This indicates that the site may have been a communal gathering point. Remains exist of a range of activities, including those associated with everyday domestic occupation, as well as more arcane activities to do with disposal of the dead.
The remains of at least ten Iron Age people have been found. Most were in pits already being filled in with other material, but one complete body was in an apparently purpose made grave, laid neatly on her side with an iron bracelet on one wrist and a shale pendent at her throat.
More recently the site was the location of the Plant Breeding Institute (PBI), established by the Ministry of Agriculture Food and Fisheries. After a brief spell as an Italian prisoner of war camp in the 1940s, the Institute resumed its activities, breeding household names such as the Maris Piper potato. Sold on to Unilever and briefly Monsanto, the site was acquired by Grosvenor and USS in 2004.