The Trans-Himalayan region broadly is the area that lies to the north of the Great Himalayan Range, it’s defining characteristic being it lies in the great rainshadow and is an high altitude desert for the most part. From Guraiz in Kashmir, the book is a spectacular introduction to Lahaul Spiti in Himachal before moving deeper into Zanskar, Baltistan, Ladakh and the Nubra region.