The river Yamuna, a major tributary of the Ganges, comes down to Delhi from the Himalayas. Its been coming down for over 50 million years , running its banks during the monsoon , swollen with water and depositing sands on its floodplain. This sandy layer on top is now about 40 meters deep and 100sq km in area - that's a lot.

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Acknowledgments

Conceived by
Vikram Soni (National Physical Laboratory & Natural Heritage First)

Made by
Shamir Biswas, R. Vivek, Abhimanyu Talwar and Anuj Garg as a project sf NSS
IIT Delhi
With supervision by M. Ravi( IIT Delhi)
Diwan Singh and Vikram Soni( Natural Heritage First)
Vikal Samadariya ( Kalpvriksha)

Acknowledgments: V. K. Jain ( TAPAS) and Sachin Maheshwari (IIT Delhi) and Google Earth

Supported by Ashok Trivedi