Nature Photography - Mammoth Hotsprings Terraces in Yellowstone National Park - The main attraction at Mammoth Hot Springs is the terraces. Heat, water, limestone, and rock fracture combine to create the terraces. Travertine is deposited as white rock, however the microorganisms and living bacteria create beautiful shades of oranges, pinks, yellows, greens, and browns. The Mammoth Hot springs are constantly changing. As formations grow, water is forced to flow in different directions. The constant changes in water and mineral deposits create a living sculpture. Mammoth Hot Springs is divided into two sections, the lower terraces, and the Upper terrace Loop.