Salt domes and caves
Salt domes and caves have an effective role in the treatment of diseases such as allergies, bronchitis, hypothyroidism, heart disease, hypertension, skin diseases, neurological diseases and stress. In some countries such as Germany, Italy, Azerbaijan, Poland, Austria, Ukraine, although they do not have natural salt domes and caves, builds artificial salt caves by importing large amounts of salt, and thus gains great benefits as the medical tourism industry booms.
In Iran, there are many natural and beautiful salt caves and domes in the provinces of Azerbaijan, Semnan, Qom, Yazd, Kerman, and especially the salt caves of the Persian Gulf and the southern cities of the country.