Trekking in Langtang region is not as well known as trekking in Everest region (east Nepal) or as trekking in Annapurna region (west Nepal). The Langtang region is just north of Kathmandu valley. Hence it is very easily accessible from Kathmandu. Langtang region is declared National Park in 1976. Langtang National Park encloses the catchments of two major river systems' one draining west into the Trishuli River and the other east to the Sunkoshi River. The area extends from 32 km north of Kathmandu to the Nepal China border. Most of the treks are around three important destinations in the region. They are Helambu, Gosaikunda, and Langtang valley.