An unusually wide and long valley in the lower Himalayas is called Doons. For example: Dehradun in India. It is a popular tourist place. During summer people visit this place, why do they visit it.
Because Dehradun is in the Doon valley on the foothills ofthe Himalayas nestled between the river Ganges on the east and the river yarhuna on the west. The city is famous for its picturesque landscape and slightly milder climate and provides a gateway to the surrounding region.