Aiyaru The story that he bathed in a lake at Mount Kailasa and emerged at Thiruvaiyaru should be viewed from a fascinating angle. The name “Aiyaru” also called “Pancanadam” stands for five rivers.The name the five rivers” is derived from the word Pancanada, the five streams, that fell on Nandikesvara, from Lord Siva and Parvati at Mount Kailasa. These five streams falling on Nandikesvara as abhisheka, conferred on him the place of Gananatha, leader of the Sivaganas.Thiruvaiyaru is intimately associated with nandikesvara. The festival of Nandi’s marriage is celebrated with great acclaim to this day at Thiruvaiyaru. Obviously, tradition has connected Thiruvaiyaru with Kailasa from early times.That Appar visited Mount Kailasa, and emerged at Thiruvaiyaru, has this traditional meaning. Just as Nandikesvara beheld Siva and Parvati seated on Kailasa, so also Appar beheld the same sight at Thiruvaiyaru. Obviously he had a vision of Lord Sia here and became a fully realised soul, a Sivagana. Afte this, Appar lived in a state of pure “Siva-consciousness”. Two temples were erected in the reign of Raja Raja Chola I, both within the premises of Pancanadisvara temple, Thiruvaiyaru; one is now popularly called “Vada (North) Kailasa” and the other “Ten (South) Kailasa.” http://www.tamilartsacademy.com/books/siva%20bhakti/chapter02.html North Kailasa - South Kailasa Kailasa - Thiruvaiyaru