Utkal University Archaeology Prof. Dr. Sadasiva Pradhan excavated the Gumagad site under Gudvela block near the Tel river valley in Balangir district, where he found that a strategic military hub existed in the 1st century BC. It was set up by a king contemporary to king Kharavela. Four copper plates were also found at Terssingha village which speaks of the Tel valley civilisation. Those plates had information regarding the two capitals – Udayapur and Parbatadwaraka – which were under the rule of Rashtrakutas and local chieftains belonging to different clans. The Udayapur area, the capital of Rashtrakuta kings, who ruled in the valley, still does have standing structures and also the ruins. These are mostly found at Amathgad. Ruins of a medieval fort is also found there.