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Context

• A US-based lab has carbon-dated the remainings discovered from an ancient civilization in Tamil Nadu to at least 3,200 years.

About

• As mentioned the finding has established that the Porunai River (Thamirabarani) civilization dates back to 3,200 years.
• The results of the Beta Analytic Testing showed that rice and soil existed dates back to 1155 BCE.
• This is the oldest civilization perhaps, older than the Vaigai civilization which is believed to be 2,600 years old.

Thamirabarani River

• The Thamirabarani or Tamraparni or Porunai is a perennial river that originates from the Agastyarkoodam peak of Pothigai hills of the Western Ghats.
• It flows through Tirunelveli and Thoothukudi districts of the Tamil Nadu state of southern India into the Gulf of Mannar.
• It was called the Tamraparni River in the pre-classical period, a name it lent to the island of Sri Lanka.
• The old Tamil name of the river is Porunai.
• From the source to sea, the river is about 128 kilometres (80 mi) long and is the only perennial river in Tamil Nadu.

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