Riyadh: Al-Rub' Al-Khali, also known as the Empty Quarter, spans the southeastern third of the Arabian Peninsula, making it the world's largest contiguous sand desert. Covering an area of 640,000 square kilometers, it comprises approximately 67.7% of Saudi Arabia's dunes.
According to Saudi Press Agency, this vast desert is marked by towering dunes that can reach up to 300 meters in height. The sand formations in the desert are diverse, including crescent, elongated ("uruq"), and star-shaped dunes. Additionally, salt flats are prevalent, formed following rainfall events.
Al-Rub' Al-Khali is also noted for its abundance of natural resources. It houses significant oil and natural gas reserves in the massive Shaybah and Ghawar fields. The desert is rich in minerals such as gypsum, rock salt, and glass sand. Moreover, groundwater from the Wajid aquifer is a crucial supply of drinking water for the Najran Region.
The area is home to important archaeological sites, including Uruq Al-Mundafan and the Uruq Bani Ma'arid reserve, situated north of Najran. These sites contribute to the historical and cultural significance of the region.