Gysers of Yellowstone

Yellowstone is home to some 10,000 thermal features, over 500 hundred of which are geysers. In fact, Yellowstone contains the majority of the worlds geysers. Within Yellowstone's thermal features can be seen the product of millions of years of geology at work. Much of Yellowstone sits inside an ancient volcanic caldera. Yellowstone is composed of almost 75 geysers. There are about 9 different geysers in each main named geyser; Gibbson, Heart Lake, Lone Star, Lower, Midway, Norris, Shoshone, Upper, and West Thumb, witch are all atcive.