(i) Bhabar is a plain situated along the foot of the Shiwaliks from the Indus to the Tista. Bhabar Tarai It lies along the foot of the Shiwaliks from Indus to Tista, about 8 to 16 kms. wide It lies to. the south of the Bhabar and runs parallel to it, about 20 to 30 kms. wide. It comprises pebble-studded rocks in the shape of porous beds so it is not suited for agriculture It is composed of comparatively finer alluvium and is reclaimed for agriculture. (ii) India shares the longest land boundary with Bangladesh. Length of the boundary is 4,096 kms.