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
Cincinnati and Whitewater Canal Tunnel canal tunnel near the village of North Bend, which was finished six years before the canal opened for business. This tunnel was needed because of a steep ridgeline on the village's northern side, separating it from Cleves, on land owned by retired war hero William Henry Harrison, who as one of the canal's proponents was happy to sell land for its right-of-way and to supply wood and bricks for the tunnel. After his ascension to the presidency and sudden death, Harrison was buried atop the ridgeline near the tunnel's southern portal. Lined with brick, the tunnel includes ashlar stonework portals