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The red colour indicates the salinity of the ponds.
Walvis Bay has one of the largest salt works in Africa. Refiners salt production process is based on the solar evaporation of sea water to produce 99,4% pure sodium chloride on dry mass basis.
Sea water off Walvis Bay, which is the only raw material, contains a 3,5% concentration of salts with 2,,9% sodium chloride. The water is pumped from a natural lagoon at a rate of 240m3 per minute into a series of pre-evaporation ponds and then through a series of concentration ponds.
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Special Thanks to @lucroit for sponsor me !
This picture was made with my Nikon D800E and the Nikkor 14/24mm 2,8
I have choose to use this perfect holder system for my Lens !
Here there are the Holder system for the 14/24mm and a graduated soft filter ND 0,3 165x200mm
Website: http://www.lucroit.com , if you want to order you can use my code : africatracks10 you will take 10% discount.
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FSD 