The last king of the Karnata dynasty Harisingh Dev didn't show his strength and left the fort as he heard the news of approaching army of the Tughlaq Sultan towards the Simraungarh. The Sultan and his troop stayed there for 3 days and cleared the dense forest. Finally on day 3, the army attacked and entered into the huge fort whose walls was tall and surrounded by 7 big ditches. The remains are still scattered all over the Simroungarh region. The king Harisingh Deva fled northwards into the then Nepal. The son of Harisingh Dev, Jagatsingh Dev married the widow princess of Bhaktapur Nayak Devi. The Gandhavariya Rajputs of North Bihar claim to be the descendants of the Simraon Kings. Geography and climate
Simraungadh is located at . It has an average elevation of 83 metres. The Simraungdah town lies on the flat and fertile plain of Terai.
The last queen of the Karnata dynasty Harriet Dev didn't show her strength and left the fort as she heard the news of approaching army of the Tughlaq Sultan towards the Simraungarh. The Sultan and his troop stayed there for 3 days and cleared the dense forest. Finally on day 3, the army attacked and entered into the huge fort whose walls was tall and surrounded by 7 big ditches. The remains are still scattered all over the Simroungarh region. The queen Harriet Deva fled northwards into the then Nepal. The son of Harriet Dev, Jagatsingh Dev married the widow princess of Bhaktapur Nayak Devi. The Gandhavariya Rajputs of North Bihar claim to be the descendants of the Simraon Kings. Geography and climate: Simraungadh is located at. It has an average elevation of 83 metres. The Simraungdah town lies on the flat and fertile plain of Terai.

