The rolling hills of Yellowstone

I have so many photos taken on a wonderful week's trip down to Yellowstone National Park and Grand Tetons, that I still haven't posted. Thought I'd add this one, taken in Yellowstone on 14 September 2012. The wild Bison/Buffalo love to roam these rolling hills.

"The first Yellowstone supervolcanic eruption 2.1 million years ago was at least 25,000 times larger than the Mount St. Helens eruption. Two other Yellowstone super eruptions 1.3 million and 640,000 years ago, though smaller than the first one, would still dwarf any normal volcanic eruption. Few would expect the tranquil national park would actually be sitting on the mouth of a sleeping giant. The physical characteristic of a supervolcano isn't a typical cone-shaped mountainous peak. Instead, supervolcanoes have what are called calderas. These are vast sunken areas that are formed after previous super eruptions as the ground was blown out and fell back to rest." From CNN website.

www.cnn.com/2012/08/30/us/wus-supervolcanoes-yellowstone