#HTE
Salt pans are visible on Ile de Noirmoutier, an island off the coast of France. Here, more than 800 tonnes of salt are extracted annually through evaporation. Sea water is channeled into the basins via canals, which pass through reservoirs that get progressively shallower. Over time, evaporation causes the salt to crystallize and it is then carefully extracted from the pans. /// Created by @benjaminrgrant, source imagery: @digitalglobe (at Île de Noirmoutier)
http://dailyoverview.tumblr.com/post/168611180619