A modest village, Chennanur, in Krishnagiri district, Tamil Nadu, has emerged as one of South India’s most significant archaeological sites after excavations revealed evidence of continuous human occupation spanning more than 10,000 years.

Chennanur, in Uthangarai taluk, has produced a rich sequence of cultural remains that chart transitions from the Microlithic period through to the Medieval age. Archaeologists say the site offers a rare, unbroken window into how early societies in the region evolved, adapted and sustained themselves.

So far, Tamil Nadu has had five recognised Neolithic sites — Paiyampalli, Valasai, Chettimedu, Mayiladumparai and Molapalayam. Chennanur now joins that list with unusual prominence: excavators uncovered a one-metre-thick layer of Neolithic deposits littered with potsherds, along with 327 artefacts retrieved from 11 trenches dug across two adjacent fields. The collection spans six cultural phases, from stone microliths to iron implements and early inscriptions.

Scientific dating has provided striking results. Optically Stimulated Luminescence testing places the earliest occupation at around 8450 BCE, while Accelerator Mass Spectrometry dating confirms Neolithic activity from 2220 BCE. Archaeologists say these findings not only refine Tamil Nadu’s prehistory but also connect the site to broader South Indian cultural networks, with parallels to Maski, Hallur and Sanganakallu in Karnataka, as well as Kurnool in Andhra Pradesh.

“This is only the second site in Tamil Nadu, after Pattaraiperumbudur, to show uninterrupted habitation from the Microlithic to the Medieval period,” said S Paranthaman, who led the excavation. “The cultural phases illustrate gradual shifts in technology and belief rather than abrupt breaks.”

Layers of Neolithic stone tools, Iron Age ceramics, and traces of food processing and animal domestication suggest a settled and complex community. Burial features noted in earlier surveys add to the impression of a society with organised structures and ritual practices.

The Tamil Nadu State Department of Archaeology has been expanding its excavations across the state in recent years, seeking to balance study of prehistoric, Neolithic, Iron Age and early historic sites. In 2023, its team reported the world’s earliest known date for smelted iron — 3345 BCE — at Sivagalai on the Thamirabarani river, a discovery that placed Tamil Nadu at the forefront of global metallurgy studies.

Chennanur’s layered history shows how deeply rooted South India’s human story is, its communities adapting over millennia yet leaving behind traces of continuity in tools, pottery and settlement patterns. What appears today as a quiet village turns out to be a palimpsest of innovation and resilience, a reminder that the past does not merely lie beneath our feet but actively shapes how we understand cultural endurance and transformation.