"The hillock, according to Tarikh-i-Hassan, (pp 394-496, Vol. II) and (Waquiai Kashmir of Mulla Ahmed was known originally as Anjana and later as Jeth Ludrak and the temple was built by King Sandhiman of the Gonanda dynasty of Kashmir (471-536 Laukek Era), corresponding to 2605-2540 B.C. He gave the name Jeshteshwara to the temple and the hillock came to be known as Sandhiman Parbat after the name of the King. According to Dr.Stein, translator of Kalhana's Rajtarangani, King Gopadityas (369-309 B.C.) repaired the temple and donated two villages, the present Gupkar and Buchhwara (Bhaksira Vatika) for the maintenance of the temple. This time the hillock was given the name Gopadari or Gopa Hill. This name and Jeshteshwara for the temple prevailed till the Kashmiris dedicated the temple to the sweet memory of Adi Shankaracharya, who visited Kashmir and stayed at the temple complex. This is confirmed by Tarikh-i-Hassan (pp.80-82, Vol.I), although there is some confusion about the dates of Adi Shankaracharya's visit to Kashmir. However, after the dedication, the temple and hill came to be known as the Shankaracharya temple and hill after the great sage and scholar from the south of the country. After the first repairs to the temple carried out by King Gopaditya, King Lalitaditya (697-734 A.D.) repaired it."
January 1, 1970
https://en.wikiquote.org/wiki/Hindu_temples_in_Kashmir