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 Kakadu National Park; a southern outlier is in Nitmiluk National Park, with much of the remainder due to be incorporated in the Wardekken Indigenous Protected Area. Identified as an important bird area by BirdLife International, the plateau supports the entire population of white-throated grasswrens, and most of the populations of white-lined honeyeaters, chestnut-quilled rock-pigeons and the local subspecies of black-banded fruit doves and helmeted friarbirds. It also supports populations of bush stone-curlews, varied lorikeets, northern rosellas, rainbow pittas, white-gaped, yellow-tinted, bar-breasted and banded honeyeaters, silver-crowned friarbirds, masked and long-tailed finches, and sandstone shrike-thrushes. Arnhem Plateau The Arnhem Plateau, an interim