Green Valley Nepal Treks and Research Hub Pvt. Ltd. About Usis Eco - friendly trekking, tour and research company in Nepal, was founded by well experienced, Academic, dedicated and professional team. Since its inauguration the company has been organizing adventure travel, trekking, peak climbing, expedition, tours and research for individual and small groups as well as the larger parties such as travel agents, Airlines crews and business holidays tours in Nepal, Tibet, Bhutan and India. Green Valley Nepal Treks also provide special packages tours for Students from different Schools, Colleges, University and research central. We have been exploring and promoting non touristic areas for those who are interested to make different than normal trekkers and go way from the touristic area.