Trekking in Nepal today is completely different to that of the 1960s. In all the main trekking areas, the National Parks and Conservation Areas lodges have been established where trekkers can find accommodation, food and meet other trekkers and locals along the way. The majority of the trails are well maintained and in many cases are sign-posted. The lodges are well appointed and have facilities for charging batteries and the larger villages often have email facilities. The length, the difficulty and timing of the treks vary greatly and to add to that once outside of the main trekking areas transport becomes more problematic and often involves at least two journeys made on domestic scheduled flights.The three main trekking areas and therefore the most easily accessible are the Everest, Langtang and the Annapurna regions.  Annapurna and Langtang have a slight advantage in so much that they can be reached via road connections. Trekkers are of course rewarded when they venture further afield as well! Great Himalaya Trails has extensive information on other trekking regions, which are accessible by domestic flights, such as Kanchenjunga, Makalu, Dolpo, and the Far West. Several days of trekking is required to reach the higher mountain areas from the local centers of population and administration.