Which of the following valley is without exception the most rugged glen of Kinnaur district ........

Explanation:

Tidong Valley

Explanation: The Tidong valley: This valley is without exception the most rugged glen of the district. Being rugged, full of huge boulders, rocks, and caves it is often called a ‘scene of savage grandeur’. The length of this valley is about 32 Km and within itself the valley encloses the villages Kuno, Charang and Thangi. The village of Charang being the highest, about 3600m from the mean sea level. There are few dwarf pines, mountain ashes and some bushes except on the north-western slope, when one come across Cedrus deodara and Pinus gerardiana.The Tirung stream courses through the valley.