Through the slow decomposition of organic substances, a brine was created with a 3.5% salt concentration typical of the sea and an exceptionally rich chemical composition, unique in the world. 1 liter of brine contains over: 110 mg of iodine, 130 mg of bromine, 800 mg of calcium, 400 mg of magnesium. This brine has had no contact with the outside world for millions of years, and is currently extracted from a depth of approximately 500 m in Dębowiec