Shiva is one of the gods of the Trinity. He is said to be the 'god of destruction'. Shiva is married to the Goddess Parvati (Uma). Parvati represents Prakriti, which means perishable matter. Lord Shiva sits in a meditative pose on Mount Kailash against the white background of the snow-capped Himalayas. Lord Shiva not only represents the supreme state of perfection in man, but in his very pose indicates the way to reach it as well. The state of meditation shown in Shiva's posture is again symbolic. Meditation is the final gateway to Self-realization. On the auspicious occasion of Mahashivratri, Shiva performs the ecstatic dance of realization. Shiva is said to have a third eye known as gyana chakshu. Gyana chakshu literally means eye of wisdom. Shiva is also known as Gangadhara. which literally means, 'the carrier of Ganga' (river). Shiva is sometimes shown with his trident (trisula) in his hand. The trisula is a trident which symbolise's the destruction of the ego with its three-fold desires of the body, mind and intellect. Nataraja is Lord Shiva in the dance pose.
funkytimes.com