Arid Geography of Saudi Arabia, From Persian Gulf to Red Sea23.4N 44.1E
Saudi Arabia’s geography is dominated by the Arabian Desert and associated semi-desert and shrubland. It is, in fact, a number of linked deserts and includes the 647,500 km2 (250,001 sq mi) Rub’ al Khali (“Empty Quarter”) in the southern part of the country (visible upon opening the full image), the world’s largest sand desert.
The main topographical feature is the central plateau which rises abruptly from the Red Sea and gradually descends into the Nejd and toward the Persian Gulf (upper right quadrant). Sediments from the Shatt al-Arab River can be seen entering the northern part of the gulf.
On the Red Sea coast (visible in the lower part of the full image), there is a narrow coastal plain, known as the Tihamah parallel to which runs an imposing escarpment.