The iconographical attributes of Shiva are the serpent around his neck, the adorning crescent moon, the holy river Ganga flowing from his matted hair, the third eye on his forehead, the trishula or trident, as his weapon, and the damaru drum. He is usually worshipped in the aniconic form of lingam. Shiva is a pan-Hindu deity, revered widely by Hindus, in India, Nepal and Sri Lanka.