Mizoram is one of the most mountainous states of Northeast India and is characterised by a distinctive landscape of parallel hill ranges, narrow valleys, steep slopes, ridges, deep gorges and fast-flowing rivers . Its physical geography is closely related to the geological structure and geomorphic evolution of the eastern extension of the Himalayan mountain system. The physiography of Mizoram can be understood through its relief, geological structure, slope characteristics, drainage pattern and processes of erosion and denudation . The hills of Mizoram belong to the Eastern Hills or Purvanchal extension of the Northern Mountains . The landscape is young and structurally controlled. Longitudinal mountain ridges generally trend from north to south , while narrow valleys occur between them. Running water has played a major role in carving the present relief, producing deeply dissected hills, ravines, gorges and valley systems. Physiographic Characteristics of Mizoram The major physiograph...