Yellowstone is actually a supervolcano Yellowstone Some Women Drink Too Much Cuss Too Much And Act Like Beth Dutton Shirt. This is completely reasonable because today it is still one of the largest active volcanoes in the world. The park's history began 11,000 years ago. The oldest and most intact fossils found at the park were discovered on the shores of Yellowstone Lake. This park currently has more than 10,000 hydrothermal geysers, with a variety of hot springs, mud pits, vents, travertine terraces, and even geysers. With this temperature condition, a lot of microorganisms grow, which inadvertently creates colorful patches for the park.