Two lines of railway now connect Quetta with Sind, the one known as the Harnai loop, the other as the Bolan or Mashkaf line.
An alternative route from Sibi to Quetta was found in the Harnai valley to the N.E.
The Harnai route, although longer, is the one adopted for all ordinary traffic, the Bolan loop being reserved for emergencies.
Khalifat on the east of Quetta, flanking the Harnai loop of the Sind-Pishin railway; Takatu to the north; Chahiltan (Chiltan) on the south-west; and the great squareheaded Murdar to the south - all overlook the pretty cantonment from heights which range from 10,500 to 11,500 ft.
Coal has been worked in the Tertiary beds along the Harnai route to Quetta, but the seams are thin and the quality poor.