The Upper Mustang region is one of the restricted regions of Nepal. Similarly, many parts of the trekking trails also come inside the Annapurna Conservation Area (ACAP). Therefore, non-Nepalis are mandatorily required to get the following permit to trek in this region: Upper Mustang Trek Permit for all foreigners: USD 500 per person for the first 10 days and USD 50 per person per day thereafter. ACAP entry permit fee for foreigners: 2,000 NPR (Approx. USD 20) ACAP entry permit fee for SAARC nationals: 200 NPR You can get these permits from Nepal Tourism Board Office on Pradarshani Marg, Kathmandu, Tel: +977 1 4256909. *If you are travelling with an agency then they will arrange these for you.