Coovum/Koovam Shri Tiripuranthakeswarar temple in Thiruvallur dt. This is where Coovum river originates, flows thro' Chennai and drains in Bay of Bengal. Dating back to 6-7th Cen CE, this ancient temple is also known as Thiruvirkolam, 14th Thevara Padal Petra Sthalam in Thondainadu.