Which glacier lies between Mount Everest and the Lhotse-Nuptse ridge?

The glacier between Mount Everest and the Lhotse-Nuptse ridge is Khumbu Glacier. It lies in northeastern Nepal’s Khumbu region, on the southern side of the Everest massif, and forms a central feature of the classic south-side climbing route.

The glacier descends from the high Everest-Lhotse area toward the Khumbu Valley. Its upper section includes the famously unstable Khumbu Icefall, a maze of crevasses, seracs, and shifting ice blocks that climbers must cross on expeditions approaching the Western Cwm. The glacier is about 17 kilometers long, with elevations ranging from roughly 4,900 meters at its terminus to about 7,600 meters near its source.

A common mix-up is Rongbuk Glacier, which lies on the Tibetan, northern side of Mount Everest. Ngozumpa Glacier is also in the broader Everest region but is associated with the Gokyo Valley, while Zemu Glacier is in Sikkim. Khumbu Glacier is therefore the specific answer signaled by both Everest and the Lhotse-Nuptse ridge.