Yellowstone is one of the most geologically dynamic areas on earth thanks to the shallow source of magma and resulting volcanic activity. One of the largest volcanic eruptions known to have occurred in the world happened here, creating one of the largest known calderas. More than 10,000 hydrothermal features can be found here. Click on the links below for more information:
Did You Know?
Even though the animals of Yellowstone seem tame they are still wild. Feeding the animals is not permitted in any way, and all visitors must keep 100 yards away from wolves and bears, and 25 yards from other animals.