Inside of the Munger fort there is a hillock, on the other side of the tanks, is an artificial rectangular mound which once probably formed the citadel of the fort. There is no ancient local name given to this hill, but it is stated that there once stood here a building known as Damdama Kothi which was demolished by the British, to make room for the Collector’s Bungalow.
This Kothi was built of very strong masonry, for it had to be blown-up by gunpowder, bit by bit, since the ordinary methods of demolition could make no impression on it.
While removing the debris from its site numerous holes were discovered showing the former existence of underground rooms. Inside a well in the compound, just above the water level, two arched passages were found, one leading towards the house and the other, in the opposite direction; towards the ground now occupied by the Jail.
The Kothi would appear to be the work of the Mohammedan rulers, raised perhaps on still earlier Hindu ruins, as would be evident from the traditional association of the nearby tanks and the Karan-Chaura Hill with the earlier rulers of Hindu tradition.
It may be pointed out that Buchanan noticed on the inside of the rampant of the fort, at points where the plaster had fallen number of stone carving and sculptures, built into the masonry.