The water that cascades over the Kuang Si Falls is a startling shade of turquoise blue. An informational sign explains that the water picks up limestone particles with high levels of calcium carbonate as it falls over the rocks and this is what gives it the unique color. This was not an easy photo to work with. It took quite a bit of work in Photoshop to come up with a color that is a reasonable match to what I saw in nature.
