Legend Of Nageshwar Temple
There once lived a rakshasa called Daruka, who was extremely cruel and tortured the good ones. But yet he was a great devotee of Lord Siva. A Siva devotee, Supriya who was a merchant reached the Darukavanam, where Daruka lived with his wife Daruki, while sailing with his goods. Daruka asked Supriya to teach him the path of devotion to Siva, the norms of performing pooja and penance. Fearing that Daruka would use any additional powers gained by such penance, to bad use, Supriya refused to guide him. The enraged Daruka began to torture Supriya. Supriya however was staunch is his faith in the Lord and was unmoved by any torture. Lord Siva was pleased and appeared and killed the demon Daruka. Daruki, Darukas wife, now started giving even more trouble than her husband. Siva vanquished her too and gives darshan to his devotees at this place as Nageshwar.
This Jyotirlinga manifestation of Shiva is worshipped as Nageswara. Two other sites in India, one near Audhgram near Purna in Andhra Pradesh and another near Almora in Uttar Pradesh also enshrine temples to Nageswara Jyotirlingam. According to the Shiv Purana, any one who ever with devotion reads the birth and greatness of this Jyotirlinga shall beget all material happiness and divine status in the end