They are spectacular phenomena !!! These natural reservoirs of water are of various size. Sometimes they disappear during heavy drought or in area of porous rocky bottom. Their colours origin from the minerals of surroundings, not from reflections of sky or clouds, and they are, in fact, some kind of mineral solution. A rich blossom of some microorganisms like cyanobacteria or algae can also colour these waters. A range of their colours is from white, through grey, light green, dark green, light blue, red, purple, up to dark brown, even black.
PRESENTING THEM WE MUST REJECT COLOURS COMING FROM ANY REFLECTIONS ! Images
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