Langtang Lirung (7234m), the highest peak of the Langtang Himal, is the first mountain you pass on the Kathmandu mountain flight. It is a bulky mountain with a 10 km long west to east running ridge that culminates at its eastern end in the actual summit. From there the south face drops steeply for 2200 meters to the floor of a giant cirque from which the Lirung Glacier issues.