East of
Bahawalpur is the Cholistan Desert, which covers an area
of about 15,000, square km and extends into the Thar Desert
of India. The region was once watered by the Hakra River,
known as the Saravati in Vedic

times. At one time there were 400 forts in the area and
archaeological finds around the Darawar Fort, the only place
with a perennial waterhole, indicate that it was contemporaneous
with the Indus Valley Civilization.
The average annual rainfall is only 12 cm, and the little
cultivation there is made possible by underground wells,
drawn up by the camels. The water is stored in troughs,
built by the tribes, between sand hills and din waterholes
called tobas.
The people are racially similar to those in Rajasthan -
tall, with sharp features. They live in large, round, mud
and grass huts, usually built on the top of sand hills.
On the whole, they are pastoral and nomadic. The main tribes
are the Chachar, Mehr, Lar, Paryar, Channar, Chandani and
Bohar.
The forts here were built at 29 km intervals, which probably
served as guard posts for the camel caravan routes. There
were three rows of these forts. The first line of forts
began from Phulra and ended in Lera, the second from Rukhanpur
to Islamgarh, and the third from Bicaner to Kapoo. They
are all in ruins now, and you can see that they were built
with double walls of gypsum blocks and mud. Some of them
date back to 1000 BC, and were destroyed and rebuilt many
times.
Cotton is an economically vital crop for Pakistan. Even
it is grown in all provinces but mainly in Punjab and Sindh.
The Bahawalpur division contributes 33 % of the total cotton
production in Punjab. In Cotton crop there is more use of
pesticides then any other non-food crop.