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 by Nandi and installed in Kashi.
Kashi Khand mentions one Ling, worshipping which devotees will derive the benefits of worshipping One Crore Lings. This Ling is called Koti Ling. This Ling also finds mention in Ling Puraan, Chapter 3 of the supplement as well as in Shlok 148 to 157, Chapter 92, ibid. According to this, devotees should take bath in Ganges and perform pooja of Koteeshwar Ling which will be equivalent to performing 1 crore Godaan (donary of cow to deserving person).
LOCATION OF KOTI LING
Koti Ling is located at Dasaswamedh Vishwanath Gully in the vicinity of Sakshi Vinayak. Just before Sakshi Vinayak, there is a Saree Shop called Giridhar Stores and one Babaji Shop selling pooja items. In between these two shops, devotees can find Koti Ling.
Devotees can travel upto Dasaswamedh by rickshaw and travel to this place by foot. It is advisable to combine darshan of this deity alongwith darshan of Kashi Vishwanath (Visweshwar) temple etc.
TYPES OF POOJA
The place of worship is open throughout for darshan.