The Western plateau and highlands forms the eastern fringes of the Chota Nagpur Plateau and is made up of igneous rocks of the Archaean era as well as coal-bearing mudstone and quartzite rocks of Carboniferous period.
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This horse shoe shaped valley is surrounded by giant hills and there are several pathways to reach the villages located inside the valley . The rocks are mostly by the Archaean era which are nearly 2500 million years and comprised with Granite gneiss, green schists, basic rocks, quartz with Gondwana sediments including conglomerate sandstone, shales and carbonaceous shales . The unique composite carbon on the rocks called Shilajit is also found on few patches in upper zones.
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