Sultanganj is a town in Bhagalpur district and has a railway
station, of the same name on the loop-line of the Eastern Railway running from Calcutta to
Kiul. An excellent all-weather road connecting Bhagalpur with Monghyr and Patna also
serves it. It has a cosmopolitan population of about eleven thousand persons. It is a
flourishing business place and there are a number of schools and colleges.
Sultanganj is a place of hoary antiquity. It is traditionally associated with the sage
Jahnu, whose ashram was a centre of learning and culture. Jahnu Muni's ashram was located
on the rock jutting out of the bed of the Ganga River. Now the site has the Shiva temple
of Ajgaivinath, also known as Gaibinath Mahadeo. The story is that the river Ganga on her
way to the ocean interrupted the Muni in hismeditation by the rush of her currents. The
sage swallowed the river in a gulp. Bhagiratha intervened and the Muni again let her out
by making an incision in his thigh. That is why the river Ganga is also called Jahnavi.