Amarnath caves are one of the most famous shrines in Hinduism, dedicated to God Shiva, located in the Indian state of Jammu and Kashmir. The shrine is claimed to be over 5,000 years old and forms an important part of ancient Hindu mythology. The image of Shiva, in the form of a lingam, is formed naturally of ice - stalagmite, and which waxes and wanes with the moon. By its side are, fascinatingly, two more ice - lingams, that of Parvati and of their son, Ganesha.