Few years back, Marine Archaeologist S R Rao found evidence of a city under the sea in Dwaraka and since some of the specifications matched the description of Dwaraka mentioned in Harivamsha, a prologue of Mahabharata, people thought that they had found Krishna’s Dwaraka.
There is a new article which tells the details of how scientists at the NIOT (National Institute of Ocean Technology, of the Department of Ocean Development) found the submerged city while working for British Gas in the Gulf of Cambay region.
Samples collected include artefacts, wood pieces, pottery materials, hearth pieces, animal bones. They ere sent to Manipur University, Oxford University, London, Institute of Earth Sciences, Hanover, Germany for analysis and dating. The results were astonishing. It was found beyond doubt that the samples belonged to a period varying from 7800 to 3000 years (BP) Before Present !
The even more flooring discovery happened soon. NIOT, which carried outside scan and sub-bottom surveys in the year 2002-03, established beyond doubt the presence of two large palaeochannels (river channels which existed once and later submerged under the sea) in the Gulf of Cambay. Alluvium samples were collected from different locations in the areas of the palaeochannels by the gravity core and grab method.
Prof.Gartia (The Journal of Indian Ocean Archaeology, No.2 of 2005, Pg.144) after conducting extensive investigations concluded that Gujarat region had experienced at least three large killer earthquakes about 1500, 3000 and 5000 years BP respectively. Geomorphological evidences also show beyond doubt that the North-Western part of the Indian landmass was seismically active during the last 10,000 years. These killer quakes are likely to have caused the shifting of the rivers and sea level fluctuation including the sinking of the legendary city of Dwaraka, capital of the Lord-King Krishna. [How marine archaeologists found Dwaraka]
Other people have suggested that Krishna’s Dwaraka was not in Jamnagar, but in Junagad and apparently there are nine sites in Gujarat which claim to be Krishna’s Dwaraka.