Incredible pic that I stumbled upon at kateopolis... This is in southwestern Turkey, in an area called Pamukkale. These are travertine deposits, that have built up over thousands of years from calcium carbonate precipitating out of the natural spring water which flows there. The water contains a high concentration of CO2, and when it reaches surface, the CO2 degases, which leads to the calcium carbonate depositing. I've seen pics of this area before, but I liked this one because of the sunbathers - it gives a different perspective, which is eye catching to me.