5 November 2015. The circular wheat farms, half a mile across with a central sprinkler system, spread across the desert in the 1980s and 1990s, visible in spring to anyone overflying the Arabian peninsula as green spots amid a dun sea of sand. The oilfields remain, but the last wheat farms have just disappeared to save the aquifers supplying them.

BLOOMBERG

http://www.bloomberg.com/news/articles/2015-11-04/saudi-wells

At industryabout.com:

Saudi Arabia - Industrial Facilities Map

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