In North Rajasthan on the bank of River Ghaghar places of Indus-Saraswati civilization were discovered. This place was located in district Hanumangarh 4500 years ago at the bank of river Saraswati (Ghaghar). In Kalibangan, two dunes are found of city planning. There is a security wall around both dunes. Evidence of tilled land found in Kalibangan is the oldest. Brick walls were joined by soil which made the walls strong and durable. Individual and public drainage system is an example of highly cleanliness system.
At present here Ghaghar river flows known as Saraswati in ancient times. Bricked drains were built for the disposal of waste water. Tools made up of copper are the example of its development. Its town planning is similar to Indus town planning. Three samadhis are found which shows the respect towards dead persons of this civilization. The reasons of decline of this civilization may be drought or change in the direction of river, etc.
