Purvanchal Range
The Purvanchal Mountains, or Eastern Mountains, are a sub-mountain range of the Himalayas in northeast India. It lies south of the Brahmaputra valley.
Geography
The Purvanchal Mountains cover the states of Assam, Arunachal Pradesh, Manipur, Tripura, Nagaland, Meghalaya and Mizoram.
The range is an eastern extension of the Himalayan Range System, in north eastern India. It bends sharply to the south beyond the Dihang River gorge, and spreads along the eastern boundary of India with Myanmar. The Purvanchal range includes the hill ranges of the Patkai, Barail range, Manipur, Mizoram Mizo, and Naga Hills.
The Garo, Khasi and Jaintia hills are part of Shillong Plateau, and not part of the Purvanchal range.
Geology
The Purvanchal Mountains are composed largely of strong sandstone geological formations.