The Larkya La is the highest point of the Manaslu Circuit at about 5,106 m and the crux of the trek. It crosses from the head of the Budhi Gandaki valley, above Samdo, to Bimthang and the Dudh Khola, which flows down to the Marsyangdi and the Annapurna Circuit. It is one of the longer pass crossings in the Nepal Himalaya, with a gradual approach over moraine and a steep, often icy descent.
Trekkers spend the night before at Dharamsala, also called Larke Phedi (about 4,460 m), a small seasonal stop with basic lodging, and set off well before dawn. The climb crosses moraine, scree and, depending on the season, snow, to a ridge hung with prayer flags. From the top there are wide views of Himlung Himal, Cheo Himal, Kang Guru and the Annapurna II area. The descent to Bimthang loses well over 1,000 m.
Within the Manaslu destination, the pass is the link between the Tibetan-Buddhist upper Budhi Gandaki and the Marsyangdi valley; once over it, the route soon joins roads and the Annapurna region.