moon of Dhanishta

There are references to King Aryaraja - 300 BCE - who used to worship a lingam of ice, in Kashmir.

Rajatarangini - Book VII, Vrese 183 - refers to Amareshwara or Amarnath.
Queen Suryamathi, it is believed, offered tridents, bAnalingams and other sacred objects to the temple, in 11th Century CE.

Rajavalipataka of Prajna Bhatta has detailed references to the cave Amarnath pilgrimage.

- Wikipedia - 
History, Amarnath Temple