In the context of the physiographic divisions of Uttarakhand, the zone lying between the Lesser Himalayas and the Shiwalik Hills, characterized by longitudinal structural valleys, is known as:

💡 Solution & Explanation

The longitudinal valleys located between the Lesser Himalayas and the outer Shiwalik range in Uttarakhand are known as Duns, such as Dehradun and Kotdwara Dun. Bhabar refers to the porous, pebbly belt south of the Shiwaliks, whereas Terai is the marshy tract further south. Karewas are characteristic glacial deposits found exclusively in the Kashmir valley. These structural valleys are formed by tectonic depressions filled with alluvium.