Part of the Lord Shiva:
The Shiv lingam is a natural ice stalagmite that waxes in the period between July to September in the holy months of Shravan and wanes thereafter. It is believed that Shiva Baba narrated the story of eternal life and immortality to Ma Parvati in that cave . The Shiv Lingam which formed naturally for thousands of years then grew to be known as one of the three abodes of Lord Shiva.
It has melted completely.