With Jebel Nugum towering over it, Sana'a sits on the narrowest point of a major mountain plateau, (2.286 metres) above sea level. The region's volcanic origin and regular rainfall make it fertile and it enjoys a temperate climate throughout the year with the occasional sharp frost in the small hours of winter nights. One legend tells of its founding by Shem the son of Noah.
Virtually all citizens of Yemen are Muslims, either belonging to the Zaydi order of Shi'a Islam (50%) or to the Shafi'i order of Sunni Islam (50%). There are also approximately 3,000 Christians, 400 Jews and an extreme minority of Hindus. Islam in Yemen Virtually all citizens of Yemen are Muslims, either belonging to the Zaydi order of Shi'a Islam or to the Shafa'i order of Sunni Islam. While there are no available statistics, estimates are that the Zaydis form approximately 40 percent and the Shafa'is form 50 percent of the general population. There are a few hundred thousand Ismaili and Imami Shias who reside mainly in the north and northeast. There are some non-official Sufi doctrines.
Yemen is located in Southwest Asia at the southern tip of the Arabian Peninsula between Oman and Saudi Arabia.