The Aliyar River, known as the Ganges of Pollachi region, has along its shores many historic sites and villages. The famous amongst such villages is Anaimalai, which was once a thriving market place, where a horde of barter transactions took place, including the trade of elephants. A few kilometers to the west of Anamalai is the Perumal Swamy Karadu (Perumal Hillock). One should take the Anamalai – Periyapodhu road route to reach the hillock. The nearest landmark is the Mahatma Gandhi Ashram that is situated on the main road while travelling from Anamalai.
Upon reaching the base of the hillock, there are 720 steps that lead to the temple of Sri Senai Kalraaya Perumal. The climb up the hillock offers a breathtaking scenery and stunning panoramic views of the surrounding villages, coconut farmlands and lush paddy fields. The hillock also hosts a range of wildlife – birds like Indian Grey Hornbill, Shaheen Falcon and even carnivores like leopards and nocturnal mammals like porcupine and palm civet cats thrive here.
The hillock was used as a watch tower by many chieftains who ruled the Anamalai region over the time, for the 360o vantage point it offered. Recently, a number of swords and other battle arms left behind during the invasion of Anamalai by Tipu Sultan’s army, were unearthed at the foot of the hillock. History records the presence and rule of various dynasties like Cheras, Cholas, Pandyas over the Anamalai region. The hillock has also been utilized by Malik Kafur, the Commander-in-Chief of the royal forces sent by Alauddin Khilji – the erstwhile Sultan of Dehli, while he invaded Anamalai.