Arabia, the biggest peninsula in the world, in the south-west of Asia. It is bounded on the north by the Syrian Desert; on the east by the Persian Gulf; on the south by the Indian Ocean; and on the west by the Red Sea. This vast region which embraces an area twice and half the area of Egypt is divided into several parts, differing from each other in the features of their soil, climate and the appearance of their dwellers. The most important part is Hijaz proper, containing the famous cities of Medina and Mecca, the birthplace of the Arab Prophet, 80 kilometers from the Red Sea shores and the port of Jeddah, the leading place of the Muslim pilgrims.
Hijaz stretches from the North to the South, between the Red Sea and the chains of mountains which run down to the Indian Ocean. The south-west corner of the peninsula is named Yemen. Hadramut lies to the east of Yemen, bordering the Indian Ocean. Oman rests on the Gulf of Oman. The High tableland which stretches from the mountains of Hijaz eastwards to the desert of Al-Ahsa and Al-Bahrain on the Persian Gulf is Called Nejd.