sentences:  The ditch was 2.8m wide and a maximum of 1m deep with a U-shaped profile.Radiocarbon dates obtained through the AHRC-funded Neolithic Enclosure Dating Project show that the initial silt accumulated at around 3650 BC, whilst the middle fills contained material from the period 3000-2600 BC.Examination of pollen evidence concludes that the enclosure was built in a heath-dominated landscape with some local scrubby woodland including oak and hazel.