In addition, there are also national park entry fees at Langtang, Everest, and the Annapurna Sanctuary. If you spend less, you can change some of the money back at the end of your trek. Maps and Guidebooks One of the problems of trekking in Nepal is finding a map that's actually accurate or detailed enough to hep you find where you are. While maps and guidebooks are widely available in the many bookstores in the Thamel district of Kathmandu, they only really suffice for the major trekking routes. However, as as soon as you go off the beaten path, you've got a major challenge on your hands.
Elevations are also inconsistent.
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