India's Miracle River Saraswati- 2

Deep in the western Rajasthan desert, not far from the security- conscious border with Pakistan, an extraordinary programme is underway. Giant drilling rigs probe deep into the dry, arid earth pulling out undisturbed layers of soil and sediment for scientists to study and test. Water engineers are exploring the region's ancient riverbeds for what they call groundwater - underground reservoirs that contain perfectly drinkable water. If they are successful, their discovery could transform the lives of thousands of locals who currently experience harsh water shortages.

Mr KS Sriwastawa of the Rajasthan State Groundwater Board believes one of these ancient buried channels may be the Saraswati. He knows the stories refer to the ancient river flowing through this area and says excitedly that carbon dating has revealed that the water they are finding is 4000 years old. That would date it to the time of the Saraswati. The modern search for the Saraswati was first sparked by an English engineer called CF Oldham in 1893 when he was riding his horse along the dry bed of a seasonal Rajasthani river called the Ghaggar.

As he rode on, he was struck by a sudden thought. The Ghaggar when it flowed, was a small, puny river and there was no reason for its bed to be up to 3km wide in places unless it occupied the former course of a much larger river - the Saraswati. The discovery of a vast prehistoric civilisation that lived along the banks of a major river, has added impetus to the growing modern belief that the Saraswati has been found. Over 1000 archaeological sites have been found on the course of this river and they date from 3000 BC. One of these sites is the prehistoric town of Kalibangan in northern Rajasthan.

The town has proved a treasure trove of information about the Bronze Age people who actually lived on the banks of the Saraswati. Archaeologists have discovered that there were priests, farmers, merchants and very advanced artists and craftsmen living there. Highly sophisticated seals on which there is evidence of writing have also been found, indicating that these people were literate, but unfortunately the seals have never been deciphered. They may well hold the clue to the mystery of what happened to the Saraswati and whether it has really been found again.

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