The Langtang valley is situated directly north of Kathmandu in the Central Himalayan Region.
In a southern section of the park lies a small area of subtropical chestnut forest, along with unique Sal forest. The hill forests (2000–2600m) across the southern slopes of the park consist of Chir Pine, Rhododendron, Nepalese Alder and Oak. Moving north and higher, the Mountain zone (2600–3000m) contains mainly Mountain Oak, fading to Silver Fir, Hemlock and Larch in the lower sub-alpine zone (3000–3600m). Throughout these zones, several species of rhododendron trees form a twisted and colourful canopy. Continuing higher to the tree line, Birch and Fir forest are the last to survive. It is here at 3600–4000m that Juniper and Rhododendron shrubs slowly dissolve into the expansive alpine grassland meadows.

The elusive snow leopard is still thought to comb these alpine heights for prey. The park is also well known for its populations of red panda, Himalayan black bear, wild dog, Himalayan thar, ghoral (mountain antelope) and more than 250 species of birds.

Above the tree line, the valley opens up into a classical, glacial ‘U’ shape, bounded to the north by the impressive Langtang Himal, beyond which lies Tibet. The major peaks include Ghengu Liru (Langtang 2 (6571m)), Langtang Lirung (7425m), Kimshun (6745m) and Shalbachum (6918m). To the south, the Chimsedang Lekh forms a ridge of peaks, which includes Naya Kanga (5846m) and Gangchempo, Tilman’s beautiful Fluted Peak. Further beyond, it extends to the Jugal Himal, terminating in Dorje Lakpa (6980m). To the east, the upper meadows of the Langtang end in a massive mountain wall, forming the frontier with Tibet.

Langtang remained unknown and mysterious until Bill Tilman’s exploration in 1949. Following Tilman came Toni Hagen in 1952. Both ventured up the Langtang high valley and glacier, probing for routes into Tibet. Langtang is at present the third most popular trekking area in Nepal, after the Annapurna and Everest regions. This fabulous trek is a perfect combination of moderate and vigorous walks leading to a high alpine valley with a backdrop of high snow-capped peaks. In spring this place is alive with wild flowers.

Why not become a pilgrim and head to the shimmering lakes at Gosainkund? There you will find peace and serenity alongside the Buddhist and Hindu pilgrims. It is no wonder that this area is sacred, affording views extending all the way to the Annapurnas. Cross the Laurebina Yak La Pass (4615m), adjoining the Gosainkund and Helambu regions. At this higher altitude, the terrain is transformed into arid alpine above the tree line, and the villages become more sparse. The path descends on steep mountain trails high above the valley. Culturally, Helambu is one of the wealthiest regions in Nepal. Predominant in this region north of Kathmandu are peoples of Tibetan origin.