Bibi Nani is an area in the road between the towns of Quetta and Sibi, in Balochistan, Pakistan, and is located at 29°41'60N 67°22'60E.
The area name is most probably derived from a Sufi figure that was buried in its suburbs and is also the location of a Hindu shrine.
The story is that several hundred years ago, it was in the time of the Fire Worshippers that Bibi Nani and her brother (whose name remains unknown) came to this country to spread the word of Islam.
But the kafir king would have none of that and he sent out his soldiers to bring in the pair in chains. As the holy brother and sister saw the kafir army bearing down, they fled.
But at one point, despairing of ever getting away, they decided to split up. The soldiers chased the brother into the Bolan Pass and then when he was but a sword's length from his pursuers, he calmly walked into the rock wall.
An ancient spring of copious, tepid and slightly sulphurous water is believed to mark the spot where the saint walked into solid rock. Since that day he has been called Pir Ghaib the Invisible Saint.
Bibi Nani, buried under a road bridge some ten kilometres to the south of the spring, on the other hand, has no miracles attached to her.
Nor indeed do we know how she died. Her tomb is simple and open to the sky. Only the sheets of green signify its importance.
Several hundred miles to the south, on the Balochistan seaboard, there is another shrine once again worshipped by Hindus and Muslims alike.
For the former Sri Mata Hinglaj is where one part of goddess Durga is buried; for the latter, it is the last resting place of Bibi Nani.