Al-Ahsa Oasis

Al-Ahsa, sometimes Al-Hasa, El Hasa, or Hadjar is a traditional oasis region in eastern Saudi Arabia. The oasis is about 60 km inland from the Persian Gulf.
Al-Ahsa is part of the region known historically as Al-Bahrayn.  It includes the eastern coast of the Arabian Peninsula down to the borders of Oman.  It also includes the island of Awal (modern-day Bahrain).

Al-Hasa has one of the largest numbers of Shia Muslims in mostly Sunni Saudi Arabia.

With an area of around , Al-Ahsa Oasis is the largest oasis in the world. There are more than 2.5 million palm trees including date palms in the oasis, which is fed from a huge underground aquifer and irrigated by the flow of more than 280 artesian springs, which allows agriculture all year round in a region that is otherwise sand desert.

 Main cities and villages 
 Al Hofuf: capital city and has lots of traditional markets.
 Al Mubarraz: large city with many big markets.
 Al-Omran: has more than 15 villages and well known for the many farms.
 Shaybah: oil town in the Empty Quarter.
 More than 50 Villages.

 References 

Category:History of the Middle East
Category:Geography of Saudi Arabia