The Nar Phu Valley Trek is a remote trek in the Annapurna region of Nepal. It offers a unique combination of culture and stunning mountain scenery, as well as the opportunity to explore traditional villages that are rarely visited by tourists. The trek takes around 12-14 days to complete and passes through the Nar and Phu valleys, which are home to a variety of ethnic groups, including Tibetan refugees. The trek is considered to be challenging, and trekkers should be in good physical shape and have experience with high altitude hiking. The best time to go is during the autumn and spring seasons when the weather is mild and the mountain views are clear.