![Travertine-structures-are-formed-in-water-with-high-concentrations-of-dissolved-calcium-bicarbonate-Krka-River,-Croatia](https://videocdn.cdnpk.net/happy/content/video/premium/partners0925/thumbnails/BB_684d19d1-dc33-4ec2-95ab-33f50af1459b_small.jpg)
Travertine structures are formed in water with high concentrations of dissolved calcium bicarbonate Krka River, Croatia
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