Explanation:

The Doon Valley is an unusually wide, long valley within the Shivalik Hills in the Lesser Himalayas, in the Indian states of Uttarakhand, Himachal Pradesh and Haryana. Within the valley lies the city of Dehradun, the capital of Uttarakhand state. The Doon Valley lies between two intermittent ranges of the Himalayas, the Outer Himalayas (the Shivalik Hills) and the Lesser Himalayas, know locally as the Mussoorie Range.