Greta Bridge – Prehistoric carved stone Currently in the grounds of the Bowes Museum, this stone was found at Greta Bridge, during improvement work to the A66. The stone was used to cover a Roman burial and was close to the site of a Roman fort. The carvings on the slab are prehistoric, it has been suggested that it originally covered a prehistoric cist burial, the stone was later re-used by the Romans. Another prehistoric carved stone The Gainford Stone is on display inside the museum. This stone was also used to cover a prehistoric cist burial.