Cardona is a town in the Spanish region of Catalonia, in the province of Barcelona; about 90 km (56 mi) northwest of the city of Barcelona, on a hill almost surrounded by the river Cardener, a branch of the Llobregat. To the east of the town, the river has been diverted through a tunnel has been dug through a spur, leaving a loop of dry river bed near the saltmine. Near the town is an extensive deposit of rock salt. The salt forms a mountain mass (called Muntanya de Sal) covered by a thick bed of a reddish-brown clay, and apparently resting on a yellowish-grey sandstone. It is generally more or less translucent, and large masses of it are quite transparent. The hill has been worked like a mine since Roman times; pieces cut from it have been carved by artists in Cardona into images, crucifixes and many articles of an ornamental kind. More information...
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