Annamalaiyar is a revered Hindu deity primarily worshipped in the form of Shiva. He is particularly associated with the Annamalai Temple located in Tiruvannamalai, Tamil Nadu, India. This temple is one of the five major shrines dedicated to Shiva and is known for its grand architecture and spiritual significance. The worship of Annamalaiyar is closely linked to the concept of fire, symbolizing purification and transformation. The annual festival of Karthigai Deepam celebrates his divine presence with a massive beacon lit atop the Annamalai Hill, attracting thousands of devotees who seek blessings and spiritual enlightenment.