Geography, asked by vishallll, 1 year ago

Khyber and Bolan Passes

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Answered by avi5352
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Bolān Pass, important natural gateway through the Central Brāhui Range in Balochistān province, Pakistan, connecting Sibi with Quetta by road and railway. For centuries it has been a route for traders, invaders, and nomadic tribes between India and higher Asia. It comprises a series of long, narrow valleys or gorges and extends for 55 miles (89 km) from Rindli in the south to Darwāza near Kolpur in the north. Its widest point (16 miles [26 km]) is in the Laleji Plain south of Mach. The Nāri-Bolān Canal Project provides for the irrigation of about 24,000 acres (9,700 hectares) by means of damming the monsoon flow of the Bolān River in the Sibi Plain.
Khyber Pass, Khyber also spelled Khaybar, orKhaibar, most northerly and important of the passes between Afghanistan and Pakistan. The pass connects Kābul with Peshāwar. The pass has historically been the gateway for invasions of the Indian subcontinent from the northwest. The name Khyber is also applied to the range of arid, broken hills through which the pass runs and which form the last spurs of the Spin Ghar (Safīd Kūh) Range. On either side of the connecting ridge are the sources of two small streams, the beds of which form the Khyber gorge. This narrow gorge forms the Khyber Pass; it winds between cliffs of shale and limestone, 600–1,000 feet (180–300 m) high, and enters the Khyber Hills from the Shadi Bagiār opening, a few miles beyond Jamrūd, Pak., and continues northwestward for about 33 miles (53 km). Just beyond the old Afghan fort of Haft Chāh, it opens onto the barren Lowyah Dakkah plain, which stretches to the Kābul River.
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