Langtang has over 70 glaciers of varying sizes, the Langtang and Ganesh Himal mountain ranges, and high-altitude lakes including Gosainkunda, Parvatikunda, Bhairavkunda, and Dudhkunda.

The people in Langtang valley are almost entirely Tamangs whose culture goes back to ancient times to their origins in Tibet. The craftsmanship, costumes, traditionally-built stone houses, and the beautifully carved wooden porches reflect their rich heritage.

Protected as Langtang National Park, the area provides pristine Himalayan landscapes showcasing Nepal's natural beauty for trekkers to experience and gain an insight into the lifestyle and culture of the Tamangs who predominate.

Located about 30 km north of Kathmandu near the Tibetan border and extending in an east-west direction, Langtang is bordered on the north by the Himalayas, dominated by Langtang Lirung (7,245 m), the highest peak in the area.

To the south are the Chimse Danda (ridge), with the Ganja La pass (5,122 m), and Jugal Himal, culminating in Dorje Lakpa (6,989 m).  Glaciers spawned by the slopes of Dorje Lakpa, Langtang Lirung and other peaks feed the Langtang Khola (river).

The Langtang River passes through the high, gentle Langtang Valley before emptying in a raging torrent into the Bhote Kosi River through a long, narrow defile at the west end of the valley.

Whereas the major rivers of Nepal flow south from Tibet cutting through the Himalayan chain, the Langtang Khola, a major tributary of the Trisuli, flows east to west, cutting, as it were, across the grain of the country.

The Trisuli River, or Bhote Kosi River as it becomes above Dhunche, forms an important corridor and ancient trade route through the mountains between the Ganesh and Langtang Himal, to Kerung in Tibet.

The inhabitants of the Langtang Valley who are mostly Tamang people are strictly vegetarian and among them are Tibetans from Kerung who intermingled.

They are mainly sheep and yak herders, but grow some hardy grains and vegetables.  The daily life of the villagers include raising livestock, agriculture, and trade with Kerung in Tibet. Wheat, maize, potato, soyabean, and millet are their staple food.

Tourist facilities are available in Dhunche and Syabrubesi and there are lodges all along the Langtang trek route to Kyanjin Gompa and also along the route to Gosaikunda as well. Trained guides and porters are available in the villages.