salt piles and conveyors near mas des crottes, france

agricultural agriculture camargue coast coastal conveyor conveyors crottes crystal delta engine europe european evaporate evaporating extensive extract extracting food france french geological geology harvest heap industrial industry lake landscape machine marine mediterranean mineral minerals mining mirror mirroring natural nature outdoor outdoors outside pans pile piles pool pools salin saline salt saltworks shore slipperiness sodium structure surface thaw thawing transport water