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] reaches 5000 feet. Near the Kohat border in the south-west of the Peshawar district are the Khattak hills, the culmination of which at Ghaibana Sir has a height of 5136 feet, and the military sanitarium of Cherat in the same chain is 600 feet lower. On the east the Maidani hills part Bannu from Isakhel, the trans-Indus tahsil of Mianwali, and on the south the Marwat hills divide it from Dera Ismail Khan. Both are humble ranges. The highest point in the Marwat hills is Shekhbudin, a bare and dry limestone rock rising to an elevation of over 4500 feet.