This trek makes a wonderful circuit of the Helambu region. The normal starting point for this trek is Sundarijal because of its proximity to Kathmandu. The Helambu region is less frequented by trekkers than other regions like that of Everest or Annapurna.
Helambu, one of the most beautiful regions in the foothills of the Himalayas, is just a few days away from the Kathmandu Valley rim, situated directly northeast of Kathmandu in the central Himalayan region.
This trek takes you through the Langtang region and joins at Helambu. The Langtang area was declared a National Park in 1976 and remains the second largest national park in Nepal, covering 1710 sq km of mountainous terrain south of the Nepal-Tibet (China) border.
The area offers you the chance to immerse yourself in a broad range of cultures. The three main ethnic peoples living in the area are the Tamangs, Bhotias and, Yolmus. The Yolmo people of the Helambu region are often referred to as "Sherpas". However, neither their languages and customs nor their clan structure resemble that of the Solukhumbu Sherpas of Everest. They are thought to be more akin to Langtang Bhotias, and may also have originated from the Kyirong area of Tibet, just over the border.
Their religion and monasteries show their rich Buddhist culture. At lower elevations along the edges of the park, other mid hill tribes and castes reside including Brahmins, Chhetries, Newars and some Gurungs.