The Cholistan Desert is the most popular and largest desert in the Southern Punjab, that is the part of the Thar Desert. It was fertile land in 4000 BC due to water from the Himalayas, but due to climate change and with scarcity of water, it turns into barren desert. It also has ancient settlements from the Indus Valley civilization.
Read about Cholistan DesertDerawar Fort is situated in Ahmadpur East at the distance of 130 KM in the South of Bahawalpur. It is a square fortress in the Cholistan Desert. It is also known as Bhati Fort and was built in 9th century by Rai Jajja Solanki, a Rajput ruler of the Solanki clan. Then it was rebuilt in 1732 by Nawab Sadeq Mohammad Khan. It was initially known as Dera Rawal, then became Derawar.
Read about Derawar Fort