Nepal is a mountainous country, and most of its regions are remote. There is no access to roads, communications, or hospitals due to the isolated topography. Accordingly, the Langtang valley trek is also one of the high mountain region treks that go through remote Himalayan jungles, rivers, and glaciers. Therefore, if you book this trek through a local trekking company, a local guide who is familiar with the path will accompany you and lead you securely to your goal. There are a lot of side paths on the trail that might take you the wrong way. And if you miss the proper path there is no prospect of electronic communication. Even more, in case of any health issues or natural disasters, your guide will certainly take action and transfer you to a safe place. Moreover, if you got an accident or AMS problem, your guide will contact your agency and arrange for your immediate helicopter rescue to the Kathmandu hospital.