A slight univallate iron age hillfort occupying a prominent position on the tip of Galley hill, a narrow spur extending southwards from the Greensand. Galley Hill is a scheduled ancient monument situated on the RSPB nature reserve. The univallate Iron Age hillfort occupies a very prominent position in the landscape and would have originally commanded good views to the Sandy and Biggleswade and Potton areas. The area was later planted which has subsequently impinged the views. Beauchamp Wadmore noted in 1920 that the earthwork had also been worked by allotment holders. The hillfort covers an area of approximately 1.25 ha and is situated close to two further hillforts, Caesars Camp (a contour fort) and The Lodge (a promontory fort). Galley Hill is the best preserved of the three monuments. There is also a cursus in the vicinity as well as Iron Age settlements.