Khewra Salt Mine Wikipedia
The Khewra Salt Mine (or Mayo Salt Mine) is located in Khewra, north of Pind Dadan Khan, an administrative subdivision of Jhelum District, Punjab Region, Pakistan. The mine is located in the Salt Range, an outer range of the Himalaya Mountains which rises from the IndoGangetic Plain. It is Pakistan''s largest, the world''s 2nd largest.