The Langtang Himal is a region north part of Kathmandu vally and it lies just south of Tibetan border. The langtang valley is surrounded by high peaks of great appeal. It has become famous ever since the British mountaineer Bill Tilman described it as the most beautiful valley in the world. The highest peak in this area is Shisapangma or Gosaithan 8027m in Tibet. The course from the Langtang valley to Gosaikund is full of diversity and it is attracting many tourists. The langtang valley is also known as the treasure house of Alpine plants. The whole valley is cover with flowers during the summer.
This high and isolated region is inhabited by Tamangs whose religious practices, language and dress are much more similar to Tibetan.
Gosaikunda is one of the hindu holy place and is considerd to be made by Lord Shiva. The Buddhist Tamang that live nearby also revere it as their holy place. Every August on full moon night, lake is thronged with pilgrims for a big festival. On other days the lake sits in a tranquil atmosphere.
Helambhu is the most easily accessible of all areas from Kathmandu. It lies about 70k.m north of Kathmandu valley, is an area inhabited by sherpas. The language, culture and dress of the Helambu sherpas are very different from those of Solu khumbu sherpas.
The forests of Helambhu region and Langtang area are prime example of temperate and sub alpine vegetation. The dense oak and pine forests on the trail look fascinating. As usual, the rhododendrons form a spectacular display during the spring.
The people here are of Tibetan origin and call themselves Sherpa although they are quite distinct from the sherpas of Everest region both in language and customs. Also found in large numbers here are the Tamang people who also originated in Tibet but settled in Nepal considerably earlier than Sherpas.
Langtang Gosaikunda Helambu Trekking Map

Itinerary:
Day 01:Drive from Kathmandu to Saybru Besi (1460m.) which takes about nine hours.
Day 02: Trek from Syabru Besi to Lama Hotel (2410m.) and it takes about six hours.
Day 03: Trek from Lama Hotel to Langtang village (3330m.) which takes about five hours.
Day 04: Trek from Langtang village to Kyangjin (3730m.) and it takes about four and half hours.
Day 05: Rest day in Kyangjin. It is a day to rest and explore the area
Day 06: Trek from Kyangjin to Lama Hotel (2410m.) which takes about five hours
Day 07: Trek from Lama Hotel to Thulo Syabru (2130m.) and it takes about six and half hours.
Day 08: Trek from Thulo Syabru to Sing Gompa (3330m) which takes about five hours.
Day 09: Trek from Sing Gompa to Gosaikund (4380m.) and it takes about five hours.
Day 10:Trek from Gosaikund to Ghopte (3430m.) which takes about seven hours.
Day 11: Trek from Ghopte to Kutumsang (2446m.) and it takes about five hours.
Day 12: Trek from Kutumsang to Chisopani which takes about six hours.
Day 13:Conclude trek at Sundarijal and drive to Kathmandu (1350m.) which takes about seven hours.