Also known as Kollimalai Ghat Road, Kolli Hills Road is like no other road in the world. This scenic mountain highway has a length of 46.7 km covering a small mountain range Kolli Hills which are also known as Kolli Malai, located in central Tamil Nadu on the east coast of South India. The mountains, which are part of the broader Eastern Ghat range, have an elevation of 1,300 m (4,265 ft) covering about 280 km².
The road that starts in Kalappanaickenpatti is an exhilarating and beautiful experience. It goes through dense tropical forest with panoramic views of the lush green plains below. The mountain features the Arapaleeswarar temple that receives many pilgrims. The Kolli Hills and its Goddess Ettukkai Amman are full of myths and legends. Ettukkai Amman was the local deity who, according to a legend, chased away the demons from the mountains with her enchanting smile. Due to scenic waterfalls, the area is extremely popular with hikers.
Semmedu is an excellent spot to stop on the road for lunch, tea or coffee. Also, it has beautiful pepper plantations and paddy fields. There is also a popular Seekuparai viewpoint and the Agaya Gangai Falls in just a few kilometers from Semmedu.