"The Markandey Mahadev Mandir is a well-known Shiva shrine. Even the Shri Markandeya Purana mentions this Dham, which is the same as the Dwadash Jyotirlinga. The temple is located in Kaithi which is the sangam of the rivers Ganga and Gomti. Markandey Mahadev Temple is situated in a rural setting. 

According to mythology, there once lived a man named Mrikandu and his wife named Marudavati. They were Lord Shiva followers. They decided to worship Lord Shiva as they do not have any child. One day Lord Shiva was pleased with their devotion and granted them a wish. Then, the couple asked Lord Shiva to get blessed with a son.

Lord Shiva said that children do not bring bliss into a marriage. But as you have revered me, you now have two choices: the average son with a long life or the brilliant son with a short life, whose age will be only 16 years. The couple prayed to Lord Shiva for a special son. Marudavati eventually gave birth to a child, whom she named “Markandeya” (meaning “son of Mrikandu”). He was special and God blessed the infant. He grew up to be highly brilliant. He was dedicated to Lord Shiva.

After 16 years, Yama (God of Death) arrived to Earth to take him. Markandeya was worshiping Lord Shiva at that time in a temple. When Yama requested him to accompany him, he was terrified and begged Lord Shiva to protect him. Yama threw his rope at the child, and Lord Shiva came out of the Shiva Linga. Lord Shiva was filled with anger on seeing Yama’s impolite manner. Lord Shiva saved Markandeya’s life and blessed him everlasting life.

The fierce form of Lord Shiva which appeared to save Markandeya is referred to as Kalashmahara Murthy. At the time, Lord Shiva informed his follower Markandeya Rishi that any devotees who come to this temple from now will be welcomed. He will bow down to you before me. This Asthadham became to be known as the Markandey Mahadev Dham.
"

Markandeya Mahadev Mandir Kashi Maha Shivratri Special