Which desert is a northeastern part of the Sahara lying in Libya, Egypt, and Sudan?

The Libyan Desert is the northeastern part of the Sahara spanning eastern Libya, western Egypt, and northwestern Sudan.

This vast region covers approximately 1.3 million square kilometres. It contains sand seas, dune fields, gravel plains, rocky plateaus, salt flats, and isolated mountain massifs. Despite its name, the Libyan Desert is not confined to the modern country of Libya; in Egypt, much of the same area is commonly called the Western Desert because it lies west of the Nile.

The region is among the Sahara’s most arid and least populated areas. Its lack of reliable wells and grazing land historically made some routes difficult for camel caravans, including routes between the oases near Egypt’s Nile Valley and Murzuk in Libya. Important oases include Kufra, Jaghbub, and Jalo.

The Nubian Desert is a nearby but distinct desert east of the Nile, mainly in Sudan and Egypt. The Arabian Desert lies farther east across the Red Sea, while the Kalahari is in southern Africa. Those geographic distinctions make Libyan Desert the canonical answer here.