The mines are considered the oldest in the salt mining history of the sub-continent.
Unbeknownst to many, Pakistan is home to the world's second largest salt reserves, found in district Jhelum of the Punjab province.
The Khewra Salt Mines, as they are called, are located about 160 kilometres south of Islamabad, at the foothills of the Salt Range to the north of the Jhelum city of Pind Dadan Khan.
The glowing inside view of the bridge and chambers in the Khewra Salt Mines.
A tourist walks around a salt cave inside the Khewra Salt Mines.