Clocking in as the tallest active geyser in the world, Steamboat Geyser is highly unpredictable. Major eruptions, spewing water and gas...

Right on the edge of one of the most active areas of Yellowstone's geothermal activity, Sulphur Caldron churns away, bubbling with hy...

Yet another desert plant I seriously want to add to my collection, the Pin Cushion Cactus just looks so cute! Sure, I wouldn't partic...