The Arabian-Nubian Shield is a geological formation located in the northeastern part of Africa and the southwestern part of the Arabian Peninsula. It consists mainly of ancient crystalline rocks, including granites and metamorphic rocks, formed during the Precambrian era, around 600 million years ago. This shield is significant for its rich mineral resources, including gold, copper, and other valuable metals. The region is characterized by rugged mountains and plateaus, with notable features such as the Red Sea to the west and the Nubian Desert to the south. The Arabian-Nubian Shield plays a crucial role in understanding the geological history of the area and the tectonic processes that shaped it.