Grade C: Fairly Strenuous ***
Since the terrain can be hard and the days long, hikers on these treks should be in good physical condition and have some previous mountain walking experience. Steep climbing may be involved, although it is never necessary to use ropes. Treks at this level can he arranged for periods of 16 to 21 days. Typically, a gradual ascent through a green river valley will lead you up to a number of high passes, where you will reach the altitude of 5416m. Often times, you will get a close insight into the Tibetan culture. Participants should except to trek above 5416m/17872ft.