Chota Nagpur Plateau has the remains of an old fort belonging to the Nagavanshis. The Chhota Nagpur Plateau is a continental plateau—an extensive area of land thrust above the general land. The plateau has been formed by continental uplift from forces acting deep inside the earth. The Gondwana substrates attest to the plateau's ancient origin. It is part of the Deccan Plate, which broke free from the southern continent during the Cretaceous to embark on a 50-million-year journey that was violently interrupted by the northern Eurasian continent. The northeastern part of the Deccan Plateau, where this ecoregion sits, was the first area of
Geography of Odisha metres. There are two broad plateaus in Odisha : (i) the Panposh – Keonjhar -Pallahara plateau comprises the Upper Baitarani catchment basin, and (ii) the Nabrangpur – Jeypore plateau comprises the Sabari basin. These are lower in elevation than the plateaus having heights varying from 153 metres to 305 metres. Almost one-third of "Odisha" is covered by forests which make up about 37.34% of the total land area of the state. These forests cover most of southern and western Odisha. The eastern plains adjacent to the coast are covered by farmlands. The forest cover of Odisha extends over an area