Gramam Arulmigu Sivalokanathar Temple (historically known as Thiru Mundeeswaram) is an ancient 10th-century Chola granite sanctuary and the 19th holy Paadal Petra Sthalam in the historic Nadu Naadu region of Tamil Nadu. Tucked away in a tranquil agricultural village along the South Pennai riverbank near Ulundurpet in Villupuram district, this sacred shrine derives its historical name Thirumundeeswaram from the shaven-headed ascetic Mundeya Rishi, who performed intense penance here to attain divine liberation.
Enshrined in the 7th-century Tamil Tevaram hymns composed by child-saint Thirugnanasambandar and Saint Thirunavukkarasar (Appar), the temple is celebrated for granting immediate entry into Lord Shiva's divine realm (Sivalokam). The temple complex features a classic Dravidian Rajagopuram, an inner sanctum housing the Swayambhu Lingam of Sivalokanathar, a dedicated shrine for Goddess Soundaranayaki, the sacred Vilvam tree (Sthala Vriksham), and the holy Brahma Theertham. Pilgrims visit Gramam to seek spiritual enlightenment, liberation from birth cycles, mental peace, and ancestral salvation.