Renhold Ring is a medieval earth and timber ringwork fortress, partly encased by a wide ditch. Standing on a spur, the large circular ringwork is encased by high ramparts, with the original entrance probably on the west. A later medieval droveway ran through the castle, mutilating the eastern bank and the track then continues east out of the ditch. In the early 19th century undated inhumations were found near the surface, when the castle was regarded as a Roman amphitheatre. The site has a dense cover of trees, so it is best viewed in winter. 4 miles west is Bedford Castle and a mile north is The Creakers.