intricate outgrowths of calcium carbonate on the rocks are visible through the foliage of trees. bagni san filippo

039 are bagni bath calcium carbonate cascade filippo flow flowing foliage forest geology geothermal green health heat hot hydrothermal intricate italian italy landscape limestone mineral natural nature orcia outdoor outdoors outgrowths park people phenomenon pond pool province public relax rock rocks san site spa spring steam stream sulfur thermal tourism touristic trees tuscany val vertical visible volcanic water wellness whale white