The Khewra Salt Mines is located in Khewra, north of Pind Dadan Khan, an administrative subdivision of Jhelum District, Punjab, Pakistan. Situated at the foothills of the Salt Range, Khewra Salt Mines are the oldest in the salt mining history of the subcontinent. Khewra Salt Mines are the second largest in the world. They turn out 325,000 tons of salt a year. The output over its lifetime is estimated to be 220 million tons. The mine is 748 feet deep with 11 stories, the mine is filled with tunnels that run nearly half a mile into the mountain. Only 50% of what is mined is taken out, the other 50% is used as support columns in the enormous mine.
