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The sheer size of this object is what makes it remarkable.
It would have been a full third larger than any other ancient obelisk known to us.
In 2001, evidence of a sunken city was found off the coast of India, in the Gulf of Cambay.
Ranging in size from a few centimeters to more than two meters in diameter, and weighing fifteen tons, a collection of over two hundred stone spheres has been found in Costa Rica.
Artifacts such as pottery shards and hearth materials have been dredged up from the bottom.
The scale of the city is quite large, especially considering the fact that one piece of wood has been dated from as early as 9500 BC.
Others believe that they were actually used as primitive seismic instruments, with the balanced stones acting as earthquake detectors.
The Carnac site is also thought to support the controversial idea of the “megalithic yard”, a theoretical common unit of measurement that was used to build most megalithic sites.
The sites, which are located near the town of Antequera, are believed to have been established around 3700 B.