Positioned 150 meters below the ground, this salt mine has been functional since the Hittite period, Cankiri, Turkey, November 21, 2019. /VCG Photo

Located 20 kilometers from the city center, the mine's atmosphere is considered beneficial in treating asthma, bronchitis and lung diseases. /VCG Photo

A vehicle for extracting and transporting salt from the mine is displayed at the site. /VCG Photo

The mine also houses a donkey corpse, which is estimated to be approximately 300 years old. /VCG Photo