Henge
Henge enclosure (>300 m). A Neolithic ring earthwork with the ditch inside the bank, with the central flat area having abundant evidence of occupation and being more than 300 metres in diameter. Some true henges are as large as this (e.g., Avebury), but lack evidence of domestic occupation. Examples of henge enclosures are Durrington Walls in Wiltshire, and Mount Pleasant Henge in Dorset.