A new study of the walls of Dholavira is interesting for two reasons: One, it proves our ancestors knew how to tackle a tsunami, and, two, that a select group of historians who subscribe to the flawed Aryan invasion theory have always been wrong.
It was occupied from 2650 BC till 1900 BC and for a brief period for 200 years till 1450 BC.
The location of Dholavira. It is on an island in the middle of Rann of Kutch Lake.
The British postulated the Aryan invasion theory (blaming Aryans behind the disappearance of the Harappa people) and it has since been held as the prime reason for the end of Indus Valley Civilization.
So historians concluded that the people of Dholavira built the wall to defend themselves.
A map of Dholavira. Indian Express
The study was conducted in February this year on the walls which measure about 15-18 metres in thickness.
The wall along what is called the eastern reservoir. Thinking particle
Tsunami was a genuine threat to the city because during the Indus Valley age Dholavira was on the Makaran coast.
Dr. Rajiv Nigam, Consultant and former Head of Marine Archaeology Unit told Indian Express: “When we tried to probe using Ground Penetrating Radar (GPR) and basic excavation we realized that the walls were unusually thicker for prevention of an enemy attack.
He also pointed out that the theory that the walls could be part of a reservoir were wrong because there is “nothing to show signs of a reservoir”.
The castle wall of Dholavira. Thinking particle
“So when the Dholavira was raised, the builders who had knowledge about the former catastrophe wanted to secured the walls from Tsunami and storm,” Nigam said.
The Indus Valley Civilization. The lower half (in what is now Gujarat) coloured in orange is where Dholavira is located.Notice that the Arabian Sea is deep inside what is now Rann of Kutch. Thinking particle
One can note the similarity of the walls of Dholavira with that of the 400 kilometre ‘sea-wall’ being built by Japan to protect the coast from tsunami.
“The idea is the same. It means our ancestors were aware of Tsunami and succeeded in creating a defence to it,” Nigam said.
Dholavira is located bang in middle of an island in the Rann of Kutch lake. Over thousands of years, the Arabian Sea has receded to just 80 kms away from Dholavira to the west.