Yellowstone River near Calcite Springs, Yellowstone National Park, UNESCO Wortld Heritage Site, Wyoming, United States of America, North America

Yellowstone River near Calcite Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America

Hot water in pools on calcite terraces deposited by Mammoth Hot Springs, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Travertine calcite deposits, Minerva Terrace, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America (U.S.A.), North America

Travertine calcite deposits on the Canary Spring terraces, Mammoth Hot Springs and Terraces, Yellowstone National Park, UNESCO World Heritage Site, Wyoming, United States of America, North America