drying beds or crystallizing ponds in diferent levels, in a salt mine plant,, salt production by evaporation of salt water, salt

aaplusmn ana salt valley pans threshing floors production mineral inland water terrace work industry mine salty white crystal farm landscape mountain traditional travel factory harvest job labor sightseeing industrial pond spanish touristic village antique extraction historic dry evaporation flats outdoors saline salted spain ancient basque country brine landmark organic terraces evaporating