The upper reaches of the Kali Gandaki River valley are geographically and climatically part of the Tibetan plateau; and though within Nepal, the Mustang region, as it is known, and the people of Lo Manthang the Lo-pa are culturally and physically very much Tibetan. This area is not for everyone, with its harsh dry climate and rugged terrain. But those who venture forth are treated to artifacts and encounters of one of the last remaining Himalayan kingdoms, with its walled cities and cliff-side cave dwellings. The land-scape is unearthly with strangely twisted landforms and vibrant natural colors. The trek route begins and ends with a flight from Pokhara to Jomsom.