Tamil Nadu’s own Stonehenge left to rot with its potential for research

An ancient observatory is found at the State’s first astro-archaeological site in Sivaganga. This points to a highly learned group called Tamil Arivargal which had resided in the region. This group, which finds a mention in Tholkaappiyam, was well versed in astronomy, tracking not only the movement of the sun and the moon but also of the stars

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