What are duns in the context of geography?
Last updated Jun 24, 2026
Correct Answer:
Option B —
Fertile plains at the foothills
• Definition: In the context of Himalayan geography, Duns are longitudinal valleys that lie between the Lesser Himalayas (Himachal) and the Outer Himalayas (Shiwaliks).
• Formation: These are not typical river valleys. They were formed when rivers were temporarily blocked by the rising Shiwalik ranges, creating massive lakes. Over time, these lakes deposited thick layers of gravel and alluvium. When the rivers finally cut through the mountains, the lakes drained, leaving behind flat, fertile structural valleys.
• Characteristics: Because they are filled with alluvial deposits, Duns are highly fertile and have become densely populated centers for agriculture and settlement.
• Examples: * Dehra Dun (the largest and most famous)
o Kotli Duno Patli Dun
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.
More Geography questions
From across UPSC, JKPSC, and JKSSB papers — same subject, different years.
Arrange the following countries in increasing order of rubber production:A) Philippines
B) Indonesia
C) Vietnam
D) Cameroon
Select the co...
Which of the following states is bisected by the Tropic of Cancer?
Where is the Karakoram range located?
Consider the following statements:• Assertion (A): The ground temperature of the forested region is lower than the open ground on the sam...
River Godavari originates from which of the following states in India?