Yellowstone is a place of change, and this view highlights a place where change is constant and evident—the travertine terraces of Mammoth Hot Springs. Terraces form when water rises through limestone, which then allows the water to carry high amounts of dissolved calcium carbonate. At the surface, carbon dioxide is released and the calcium carbonate is deposited, forming travertine, the chalky white rock of the terraces.
Walk on boardwalks above the steaming hydrothermal features or take a drive around the vibrant travertine terraces. In the winter you can ski or snowshoe among the whiffs of sulfur along the Upper Terraces. Watch the Mammoth Hot Springs terraces webcam.