The Libyan Desert forms the northern and eastern part of the Sahara Desert and covers an area of approximately 1,100,000 square kilometres (420,000 sq mi). The desert extends approximately 1,100 km from east to west, and 1,000 km from north to south, in about the shape of a rectangle. The Libyan Desert covers eastern Libya, western Egypt, and northwestern Sudan. Like most of the Sahara, this desert is primarily sand and hamada or stony plain. The Libyan Desert is one of the driest, harshest and most remote parts of the greater Sahara, the world's largest hot desert. This extended desert country is barren, bone dry and rainless.