Rajakesari Peruvazhi
Rajakesari Peruvazhi was an ancient highway that traversed the present day states of Tamil Nadu and Kerala in India. In the ancient Tamilakam, the highway connected the Chera Nadu and Kongu Nadu regions, which were separated by the Western Ghats. The highway passed through the Palghat gap in the Western Ghats. It was part of a route that linked Muziris in the western coast of India and Arikamedu in the eastern coast, and formed part of an extended trade route between the Mediterranean and East Asia.
Tamil Brahmi inscriptions found near Coimbatore, indicate the usage of the highway by the Medieval Cholas in the ninth and tenth centuries CE. The inscriptions mention that the highway was strengthened by Aditya I in the tenth century CE. As per inscriptions on a memorial stone, Rajendra Chola I took the road to reach Chera Nadu from Chola Nadu.