This is the best map of Nepal on the entire Internet. Well Google maps is there but currently there is very little information about place names or trails on that. This maps gives an excellent overview of the mountain geography of the country. The map has been made by Himalaya Map House to show the Great Himalaya Trail route as proposed by Robin Boustead. See http://www.thegreathimalayatrail.org/ for more about the long distance path, or long distance trail which extends across the Nepal Himalaya.
Anyway, enjoy the map. Click below and give a few seconds for it to load.