The Northern part of India and Pakistan (Kashmir and Jammu) are close to the higher part of the Himalaya. I installed the Kashmir9.zip (mesh and scenery of 9 high altitude airfields) and the Nepalmesh.zip. Both freeware and available here at Flightsim.com . The YS livery is fictional, Indian Airlines used HS 748's on the route.
A flight from Shimla (VISN) to Srinagar (VISR) with a weathered plane:
The "real" Himalaya mountains are covered with clouds.
The valley of Srinagar.
The landing after this