Northwich Woodlands Northwich Woodlands Northwich Woodlands (formerly Northwich Community Woodlands) is an area of 373 hectares of publicly accessible countryside near Northwich in Cheshire, England. It comprises nine separate woods, country parks, lakes and parks, many of which are connected to each other via footpaths and other rights of way. Much of the land was formerly industrial and used for mining salt and manufacturing chemicals. The extraction of salt caused subsidence leading to the formation of pools known as flashes. The land became derelict during the 20th century as the salt industry contracted. Much of the area has now been reclaimed for
Blue John (mineral) Blue John (mineral) Blue John (also known as Derbyshire Spar) is a semi-precious mineral, a form of fluorite with bands of a purple-blue or yellowish colour. In the UK it is found only at Blue John Cavern and Treak Cliff Cavern at Castleton in Derbyshire. During the 19th century, it was mined for its ornamental value, and mining continues on a small scale. Deposits of fluorite have been recently found in China with colouring and banding similar to the classic Blue John stone. The most common explanation for the name is that it derives from the French "bleu-jaune", meaning 'blue-yellow'.