Nageshvar
Jyotirlinga
(Source wikipedia)
Nageshvara Jyotirlinga is one of the 12 Jyotirlinga shrines mentioned in the Shiva Purana (Śatarudra Saṁhitā,Ch.42/2-4, referred as "nagesha darukavane"). Nageshvara is believed as the first Jyotirlinga on the earth. There are three major shrines in India which are believed as identical to this Jyotirlinga. Those are the Jageshwar temple near Almora in Uttarakhand state, the Nageshwara temple near Dwaraka in Gujarat state and the Nagnath temple in Aundha in Maharashtra state.
The Shiva Purana says Nageshvara is in the Darukavana, which is an ancient epic name of a forest in India. Darukavana finds mention in Indian epics like Kamyakavana, Dvaitavana, Dandakavana,etc.