Lobuche peak has two summits, East and West with heights of 6119m and 6145m respectively. A continuous ridge connects them, but it is long and there is a considerable height loss and gain. The East Peak is recognised as a trekking peak, whereas the West is known as an Expedition Peak. Lobuche being an attractive mountain offers various existing routes and also the potential for new ones. The dark triangle of the rocky east face rises over the moraines of the Khumbu Glacier to a spectacular skyline, forming the south ridge. Descending a marked notch and then climbing steep snowy slopes to the top reach Lobuche East. On most occasions, the mountain is climbed on the summit ridge only as far as a subsidiary snow summit (or false peak), south-east of the true peak and before the notch. Laurence Nielson and Ang Gyalzen Sherpa made the first ascent of Lobuche East on 25 April 1984 although it is possible that others had reached the summit before but did not record their climbs.
