Baluchistan is one of the four provinces of Pakistan. It is the largest province by area, Baluchistan is bordered by Afghanistan to the north and north-west, Iran to the south-west, the Arabian Sea to the south, Punjab and Sindh to the east, and Khyber Pakhtunkhwa and Federally Administered Tribal Areas to the north-east. Quetta is the capital and largest city of Baluchistan. The main ethnic groups in the province are Baloch, Pashtuns and Brauhis. Baluchistan is situated in the southwest of Pakistan and covers an area of 347,190 square kilometres.
The capital city Quetta is located in a densely populated portion of the Sulaiman Mountains in the north-east of the province. It is situated in a river valley near the Bolan Pass which has been used as the route of choice from the coast to Central Asia, entering through Afghanistan's Kandahar region. The climate of the upper highlands is characterised by very cold winters and hot summers. In the lower highlands, winters vary from extremely cold in northern districts Ziarat, Quetta, Kalat, Muslim Baagh and Khanozai to milder conditions closer to the Makran coast.