rann of kutch

The Great Rann of Kutch, along with the Little Rann of Kutch and the Banni grasslands on its southern edge, is situated in the district of Kutch and comprises some 30,000 square kilometres (10,000 sq mi) between the Gulf of Kutch and the mouth of the Indus River in southern Pakistan. The marsh can be accessed from the village of Kharaghoda in Surendranagar District.
In India's summer monsoon, the flat desert of salty clay and mudflats, averaging 15 meters above sea level, fills with standing waters, interspersed with sandy islets of thorny scrub, breeding grounds for some of the largest flocks of Greater and Lesser Flamingoes, and is a wildlife sanctuary [7]. At its greatest extent, the Gulf of Kutch on the west and the Gulf of Cambay on the east are both united during the monsoon.
During the flooding wildlife including the Indian Wild Ass shelters on islands of higher ground called bets.
The area was a vast shallows of the Arabian Sea until continuing geological uplift closed off the connection with the sea, creating a vast lake that was still navigable during the time of Alexander the Great. The Ghaggar River, which presently empties into the desert of northern Rajasthan, formerly emptied into the Rann of Kutch, but the lower reaches of the river dried up as its upstream tributaries were captured by the Indus and Ganges thousands of years ago. Traces of the delta and its distributary channels on the northern boundary of the Rann of Kutch were documented by the Geological Survey of India in 2000.
The Luni River, which originates in Rajasthan, drains into the desert in the northeast corner of the Rann and other rivers fedding into the marsh include the Rupen from the east and the West Banas River from the northeast.
This is one of the hottest areas of India.