What are Duns Made up of? Give an Example of the Duns

By BYJU'S Exam Prep

Updated on: November 9th, 2023

The Duns are longitudinal valleys made up by the collision of the Indian and Eurasian plates, and the Shivaliks and the smaller Himalayas frame them. The valleys are filled with gritty alluvium that flows close to the streams coming from the Himalayas. Kotli Dun, Dehra Dun, and Patli Dun are some examples of duns.

Duns Meaning and Examples

Duns are mostly made of rock and alluvial soil and have a small size. These valleys are often vast, ranging from 8 to 12 km in width and 45 to 55 km in length. More than 450 different bird species have been recorded in these areas, which are also home to the Mussoorie Hills and Rajaji National Park, the places that surround the valley.

  • The community and the area’s reserve forests are particularly abundant in the hardwood deciduous forest, which supports the Terai and Bhabar ecosystems by producing fruits and flowers.
  • The alluvial soil, which forms the duns, encourages farming and enables farmers to produce a variety of crops on the surface.
  • Rice, maize, tea, and many other crops are grown here.
  • With a length of 35 to 45 kilometers and a width of 22 to 25 kilometers, Dehradun is considered to be the largest dun.

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