A desert of eastern Egypt between the Nile Valley and the Red Sea. Porphyry, granite, and sandstone found here have been used as building materials since ancient times.

• 阿拉伯沙漠：埃及东部一沙漠，位于尼罗河流域与红海之间。自古以来就在此发现的斑岩、花岗岩及砂岩，用作建筑材料