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
Harecastle Tunnel towpath was removed to increase the width of the tunnel and improve air capacity in the tunnel. Harecastle Tunnel Harecastle Tunnel is a canal tunnel on the Trent and Mersey Canal in Staffordshire between Kidsgrove and Tunstall. The tunnel, which is long, was once one of the longest in the country. Its industrial purpose was for the transportation of coal to the kilns in the Staffordshire Potteries. The canal runs under Harecastle Hill near Goldenhill, the highest district in Stoke-on-Trent. Although described singularly as a tunnel, Harecastle is actually two separate but parallel tunnels built almost 50 years apart. The