Idaiyattrunathar Temple lies in the small village of Idaiyaru which is at a distance of 6 miles from Tiruvennainallur, between Tirukkovilur and Tiruvennainallur in Thiruvannamalai District
, Tamil Nadu
. The presiding deity of this Shivasthalam
is Idaiyatreesar, facing west. There is a shrine for Goddess Sitridainayaki, facing east. Inscriptions from the Chola
, Pandya and Vijayanagar periods are found in the temple. The main festival celebrated here is in the month of Thai (mid January - mid February). Other important festivals are Pankuni Uthiram and Arudra Darisanam. The nearest railhead is the Tiruvennainallur railway station, at a distance of 5 km.