The Rhône river delta (La Camargue) is a large geological construction where are being collected billions of tons of sediments. The Mditerranean sea enters the delta to lay salts and form haline rocks. Small deposits, from the Alps, and salts melt and give nice colored landscapes.
I appreciate it when photographers share their knowledge about their subjects. :)
looks like a cool place the photo isn't your best work more of a travel photo but im sure you got a ton more to share