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
Arnhem Plateau Arnhem Plateau The Arnhem Plateau, an interim Australian bioregion, is located in the Northern Territory, comprising an area of of the raised and heavily dissected sandstone plateau that characterises central Arnhem Land in the Top End of the Northern Territory. The boundary of the Important Bird Area (IBA) is largely defined by the extent of vegetation suitable for white-throated grasswrens. The most important habitat for grasswrens is bare rock and spinifex grassland. Other vegetation includes open monsoonal savanna woodland and patches of rainforest, especially that dominated by the endemic tree "Allosyncarpia ternata". About a quarter of the IBA is within