Hatfield Earthworks (Marden Henge)

Hatfield Earthworks, also called Marden Henge, preserves part of a large Neolithic enclosure beside the River Avon in Wiltshire. Built around 2400 BC, the wider monument included a substantial bank and ditch, a smaller henge and a great mound whose purpose is thought to have been ceremonial. Excavation uncovered pottery, flint, animal bone and traces of a circular timber structure. The protected section gives the clearest impression of the earthworks and looks towards the Alton Barnes White Horse. This is a landscape of grassy contours rather than standing stone walls, and several visitors say the entrance is easy to miss. Follow English Heritage's directions to the fingerpost and gate off The Street, then use the interpretation panel to understand the field. The ground is uneven and livestock may be grazing. Dogs must stay on leads.