New Rule for Trekkers who do Langtang Region Trekking Langtang National Park and Trekking Agencies Association of Nepal (TAAN) has jointly decided to implement the new rule of hiring/taking trekking/nature guide compulsorily by the foreigners while trekking in Langtang National Park. It means, everyone (every foreginer) who is doing or planning Langtang region trekking in Nepal needs hiring at least a guide with them, otherwise, no traveler is permitted to enter in Langtang Naional Park Area or Langtang region.