What is Dun Type Valley?

The Doon Valley is an abnormally wide, long valley inside the Shivalik Hills and the Lesser Himalayas, in the Indian provinces of Uttarakhand, Himachal Pradesh, and Haryana. Inside the valley lies the city of Dehradun, the capital of Uttarakhand state. Passes are normally shaped ways or depressed spots which work with getting across the mountain without getting over its full level. They were framed during the arrangement of the mountain. 

Eg: Bomdi La Pass (Arunachal Pradesh), Shipki La Pass (Himachal Pradesh), and Nathu La Pass (Sikkim).

Duns are tight in shape and are for the most part comprised of rock and alluvial soil. These valleys are for the most part exceptionally enormous and they can be around 8-12 km wide and around 45-55 km long. These valleys are extremely wealthy in types of birds, in excess of 450 types of birds have been found there alongside the areas which encompass the valley which are The Mussoorie Hills and the Rajaji National Park. The saved timberland and the local area woods which are situated in that district are exceptionally wealthy in hardwood deciduous backwoods, which give blossoms and foods grown from the ground in Terai and Bhabar environments.

As duns are comprised of alluvial soil, it additionally upholds cultivation and assists ranchers with developing many harvests over the surface. A portion of the yields that develop here is Rice, Maize, Tea, and some more. The neighborhood individual of the valley likewise delivers wood.

A portion of the instances of the Duns are

1. Kotli Dun.
2. Dehra Dun.
3. Patli Dun.

Dehra Dun is viewed as the biggest Dun having a length of around 35 to 45 kilometres and a width of around 22-25 kilometres.

Duns are longitudinal valleys made when the Eurasian plate and the Indian plate crashed collapsing. Among the lesser Himalayas and Shivalik, they are framed. The valleys are collected with coarse alluvium passed somewhere near Himalayan streams. Instances of duns incorporate kotli dun, Dehra dun, and patli dun. Duns refer to the flat-bottom structured valleys which are formed between Shiwalik Hill and the lesser Himalayas.