“The beautiful lakes were created by the carbon dioxide rich water that is drawn from the spring melt-water in the surrounding mountains and came out from faults and cracks in the rocky landscape. This outflow of water percolates slowly through the underlying limestone, dissolving its principal mineral, calcium carbonate. Over time, the water deposited layers of hardened mineral (travertine), which created dams that trap water in increasingly large basins. These dams are usually about 32ft high and 9.6ft wide. Water cascades from one lake to the other near travertine terraces serving as massive natural dams between the lakes.” w/ photos
