The Cholistan Desert comprises the western region of the
Thar Desert in modern Pakistan, where archaeological evidence is present that the area was once inhabited by an
Indus Valley culture. This culture once used the
Hakra River to support their agricultural lifestyle. In around 600 BC, the river had changed course which caused it to essentially disappear into the ground. Due to this shift in the river, the area became an arid desert no longer suitable for human habitation. There are still evidence of ruins of up to a dozen fort structures in the region. Derawar Fort is the best surviving structure of the remaining ruins. Even though the land could no longer support a settlement, it still was able to become an important part of the trade route that had connected Central Asia to the Indian subcontinent. It also became a pilgrimage route for those traveling to Mecca, the holy Islamic city from India or vice versa. Derawar fort was built in 858 under the rule of Rai Jajja Bhati, a
Hindu Rajput ruler of the
Bhati clan, as a tribute to Rawal Deoraj Bhati, ruler of the
Kingdom of Jaisalmer who had his capital at
Lodhruva. The fort was initially known as
Dera Rawal, and later referred to as
Dera Rawar, which with the passage of time came to be pronounced
Derawar, its present name. The fort survived for as long as it did solely because of the consistent population that remained there. Many other buildings of the medieval desert fell as they did not have a population to maintain them.
Nawab Sadeq Muhammad Khan Abbasi V, the 12th and last ruler of Bahawalpur state, was born in the fort in 1904. Derawar Fort was eventually taken over by the British and was used to house prisoners, as well as hang unlucky inmates. ==Structure==