When temples are located on hills, they are considered to be specially suitable for worship and highly influence- radiating. As the temple at Tiruvannamalai in the South Arcot district is one of such temples dedicated to Siva, this festival is observed there with great eclat and thousands of people flock there every year, to witness the celebration, take part in them and derive the blessings of the presiding deity Arunachaleswara. The whole rock is illuminated and a huge flame of torch is lighted at its top after sunset on this festive day.
The hill consists of three fortified peaks. The isolated Tiruvannamalai peak is covered with jungles and is accessible only on foot. A natural column rises from the top of the hill perpendicularly, which the devotees of Siva hold to be a lingam or phallic symbol. In fact this place is one of the five main Siva centres in India, and, it is the abode of one of the five lingams brought from the highest of the super-physical regions, to wit Kailash, by Sri Sankaracharya. This temple is considered by the devotees of Siva to be as sacred as Srirangam is for the devotees of Vishnu. The other important places for the observance of this Vrata are Tiruchengodu, Palani, Vedaranyam and Tiruchendur.