Today‟s walk is the most exhilarating trek throughout the trip, and you will wake up quite early to begin gaining heights and reach the highest pass in the world, Thorung La Pass at 5416 meters. Immediately after leaving Thorung Phedi, the trail becomes steep, but it is a well efined and easy-to-track path as it has been used by the local yak herders and mule trains since hundreds of years. After about four hours of the steep and relentless climb, you will reach a point with prayer flags and a small chorten, and a building on the top of a hill. This is a teahouse at the top of the pass. From the top, the views of the majestic snow-capped mountains, hills of Mustang and the Kali Gandaki Valley, the deepest gorge in the world, are simply awe-inspiring. After spending about half an hour on photo sessions, you will retrace and descend gently, as downhill walk seems more demanding on your knees. The downhill trek to Mustang is a tiring journey; nevertheless, it is highly compensated with excellent views of the Dhaulagiri Ranges. Walking along the Jhong River Valley, you will finally reach Muktinath, a famous pilgrimage for both the Hindus and Buddhist. Overnight in Muktinath.