Crau
Image:Crau biome area map-fr.svg|thumb|upright=1.3|right|Approximative limits of Crau's biome area.
[Image:Crau - May 2007 - by Mikani.jpg|thumb|270px|right|Crau stony plain]
The Crau is the ancient confluence of the Durance and Rhône, and constitutes their vast flat alluvial fan.
Agriculture
The Crau is composed of two different parts:The dry Crau is in the south, and has been used as pasture from Roman times. There are around 100,000 sheep, including the Merino sheep.
The wet Crau is in the north and includes the communes of Saint-Martin-de-Crau, Eyguières, Istres, Mouriès, and Arles. It produces the Crau hay, which benefits from an Appellation d’origine contrôlée