The main centre of mining is Khewra in the Salt Range where the world's largest salt mines are located. Khewra salt mines are 154 kms away from Rawalpindi. The route is Mandra-Dudyal-Chakwal-Bhaun-Choa Saidan Shah-Khewra. A longer route is through Kallar Kahar-Katas. The nearest hotel accommodation is at TDCP resort Kallar Kahar. For permit to visit the mines and to book the accommodation at the PMDC Rest House at Khewra, you may contact their office in Islamabad at Plot No.13, H-9 (Manager Salt Tel: 250928-30) through PTDC Tourist Information Centres in Rawalpindi or Islamabad, at least 4 days in advance.