In the light of evidence like this it is probable .that Shiva worship preceded the Sanatana Dharma in the South and Shiva was a living person, ho moved out of the south during a Tsunami towards the Arctic where the Rig Veda was composed.
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Now the remains of a Yogi in Padmasana with Gyan Mudra was found in Harappa and it is dated being 2700 years old.