(i) The eastern side of the Highlands is demarcated because of the Escarpment having an altitude of 790 m.
(ii) The Escarpment acts as a barrier to the Southeast trade winds and cause orographic type of rainfall in the coastal region.
(iii) Beyond the highlands the effect of these winds gets reduced leading to minimal rainfall.
(iv) A rain shadow region is formed to the north east of the Escarpment. Thus, the region to the north of this area is called “Drought Quadrilateral”.
