Stock Photo - 16 January 2019, Saxony-Anhalt, Bernburg: Boots with salt-crusted soles hang in the dressing rooms of the ""European Salt Company"" (Esco). The company produces salt in the Salzlandkreis from a depth of 700 metres. The salt was deposited there 250 million years ago when a sea evaporated there. Among other things, road salt is produced from the mined salt, which is currently used on all roads north of the River Main. Photo: Klaus-Dietmar Gabbert/dpa-Zentralbild/ZB. - Bernburg/Saxony-Anhalt/Germany

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