Siwi
Siwi, later known as Sibi, lies at the edge of the Kachhi plain near the entrance to the Bolan Pass. Its fort commanded an important route between the Indus country and the highlands of Balochistan. The stronghold is associated with Mir Chakar Rind, a celebrated figure in Baloch history, and has sheltered successive rulers and garrisons.
In 1511 Shah Beg Arghun captured the fort, and his son Shah Hasan repaired it in 1526. The Mughal prince Humayun later passed through Sibi during his years of exile. In the eighteenth century the surrounding country became part of the contest between Sindh and Kalat; Nadir Shah transferred Sibi and Kachhi to the khan of Kalat in 1740. Its position at the foot of the pass kept Sibi important to armies and travellers moving between the plains and the plateau.