A team from the State Department of Archaeology, Chennai, has identified 250 cairn-circles at the Kodumanal village in Erode district.
The Kodumanal excavation of 10 pots and bowls, placed outside three-chambered burial cists and inside the cairn-circle, threw light on burial rituals and the concept of afterlife in megalithic culture.
The rectangular chambered cists, each two metres long and six metres wide, are made of stone slabs, and the entire grave is surrounded by boulders that form a circle.
This is probably the first time that 10 pots have been found near the cists during excavations in the State.
Earlier excavations revealed that the site served as a trade-cum-industrial centre from 5th century BCE to 1st century BCE.
Megaliths are spread across the Indian subcontinent, though the bulk of them are found in peninsular India, concentrated in the states of Maharashtra (mainly in Vidarbha), Karnataka, Tamil Nadu, Kerala, Andhra Pradesh and Telangana.
Even today, a living megalithic culture endures among some tribes such as the Gonds of central India and the Khasis of Meghalaya.