Blisworth Limestone Formation relationship to the Jurassic ridge, to the west of Peterborough. (BGS sheet 157) Around Towcester it reaches a thickness of 9m. (Hains & Horton p. 85) Blisworth limestone is used as a building material, in particular as blocks of stone. Lilford Hall in Northamptonshire is made from Blisworth limestone. Blisworth Limestone Formation The Blisworth Limestone Formation is a geological formation primarily consisting of limestone deposited during the Bathonian stage of the Middle Jurassic, found in the Jurassic ridge which extends north and south through England. It was laid down in the shallows of the Jurassic sea and is part of
Kessler Tunnel tunnel until 1975 and the rail line was abandoned that same year by the Chessie System, which had taken over the WM and combined the WM's operations with those of the B&O. The National Park Service acquired the tunnel and adjacent portions of the WM right of way in 1980. The site is part of Chesapeake and Ohio Canal National Historical Park. Kessler Tunnel Kessler Tunnel is an abandoned railroad tunnel in Allegany County, Maryland, located about east-northeast of Oldtown. It was built by the Western Maryland Railway (WM) in 1906. It was constructed with concrete arch portals and the