 During those periods these regions were quite inaccessible, covered by dense forests and was inhabited by certain tribes like 'Malappandarams' and 'Malayarans'.The archaeological excavations points out that there was an ancient Neolithic culture flourished in the high-ranges which wasn't written or recorded.But the findings of cultural remnants from the hill tracks near Kumily and Vandiperiyar provides some factual evidences of the existence of a rich culture.