Himalaya Land Treks has obtained several legal documents and registrations to operate its business in Nepal. These include a tourism license from the Nepal Tourism Board, membership with the Trekking Agencies Association of Nepal, a trekking permit from the Department of Tourism, a foreign exchange license from the Nepal Rastra Bank, and registration with the tax office and other necessary places. These legal documents ensure that the company operates within the legal framework of Nepal and provides safe and reliable services to its customers.