The Bolan Pass connects the Sindh Province with Quetta in Balochistan and onward through Chaman with Afghanistan.
Enclosed by the branches of western mountains are a number of fertile plains which have been formed by rivers rising from these mountains and falling into Indus. From north to south are the vale of Peshawar (Kabul River), Kohat Plain (Kohat River) and Bannu Plain (River Kurram and Tochi), Peshawar valley covers some 2,200 sq. miles (5,698 sq.km) and is very fertile. It is irrigated by a network of canals which are supplemented by water of the Warsak Dam on Kabul River.
Wheat, maize, sugarcane tobacco and sugarbeet are cultivated in large quantities.Large industrial Plants have been established at Peshawar, Mardan, Nowshera and Charsadda. The sugar mills at Mardan and Charsadda are reported to be the largest in Asia.
Kohat valley is uneven and broken, but has fertile soil. The Tanda Dam on River Kohat supplemented water of the tubewells and the small tanks formed by damming the rivers. Wheat, barley, gram, maize, rice and melons are grown in substantial quantities. Kohat, an important town, owes its significance as a marketing centre and a cantonment.
