According to Kashi Khand, Chapter 69, the place where Lord Shiva wore the skin of Gajasur after slaying the latter, was called Rudra Vasam. (Kindly refer to Krithi Vaseshwar).
Once the Lord, in his form as Krithi Vaseshwar, was sitting alongwith Goddess Uma Devi when Nandi offered his prayers and stated that there are 68 places of worship dedicated to Lord Shiva in this holy place. Various idols/Shiv Lings have been brought from several other places and installed in Kashi.
From Shri Shail Mountain one Ling by name of Tripurantak has appeared in the Holy city of Kashi, which is called Tripurantakeshwar. By worshipping this deity, the devotee derives the benefit of worship the Holy Shri Shail Mountain. A devotee who worships Tripurantakeshwar will attain Moksha and need not worry about rebirth.
On all India basis there are twelve Jyotirlings and there are twelve important Shiv Lings in Kashi which represent the aforesaid twelve Jyotirlings. Tripurantakeshwar is worshipped as Mallikarjun Jyotirling (Sri Sailam, Andhra Pradesh).
LOCATION OF TRIPURANTAKESHWAR
Tripurantakeshwar is located at D.59/95, Sigra Tila (Mount of Mud). If devotee travels from Sigra towards Mehmoorganj, after about 100 yards towards the left side he will come across Union Bank of India and further onwards one commercial complex called Siddharth. Just ahead of this is Shitla Devi immediately after which there is a left turn. After taking a left turn devotees will come to Sigra Tila over which this temple is located. In the same premises, devotees can find Trimukh Vinayak.
Two more deities are worshipped in Varanasi symbolic of Jyotirlings of their respective Jyotirlings elsewhere. Grishneshwar located at Kamakhya temple and Baijnatheshwar located nearby are worshipped for Grishneshwar (Ellora/Maharashtra) and Baijnath (either Parli Maharashtra or Bihar) respectively.
TYPES OF POOJA
The place of worship is open from 06.00 a.m. to 11.30 a.m. and from 05.00 p.m. to 09.00 p.m. The timings are flexible. Devotees can perform their religious rituals with absolute peace of mind at this temple since the place is quite away from any kind of noise pollution.