The Shyok and its affluent, the Nubra, rise in the giant glaciers to the south-west of the karakoram pass.
"The Panjab, North-West Frontier Province, and Kashmir"
Sir James McCrone Douie
To mention extreme cases; the snow-level of Sikkim in 27 degrees 30 minutes is at 16,000 feet, whereas in latitude 35 degrees 30 minutes Dr. Thomson found the snow line 20,000 feet on the mountains near the karakoram Pass, and vegetation up to 18,500 feet-features I found to be common also to Sikkim in latitude 28 degrees.
"Himalayan Journals V2."
J. D. Hooker
3. The Kouenlun or karakoram chain, dividing the Indus from the Yarkand river.
"Himalayan Journals V2."
J. D. Hooker