of or relating to various types of landforms & bodies of water
Magnificent sunset scenery of Primošten, Croatia. (by LaPanteraRosa.)
Grand Prismatic Spring
Located in Yellowstone National Park, Wyoming, the Grand Prismatic Spring is the largest natural hot spring found in the US. The spring has a scalding temperature of 160 °F (70 °C), a total depth of 160 feet and a diameter of 300 feet. The vivid, rainbow colors in the spring are the result of pigmented bacteria in the microbial mats that grow around the edges of the mineral-rich water.