Most people don't know this: Yellowstone National Park is an active super volcano! And that was exactly the reason for my visit... Yellowstone sports some three hundred geysers and over ten thousand geothermal features. Yellowstone is essentially a volcanic park. I was not sure which geysers were going to be active in the early morning that I hiked out among the upper geyser basin - also home to the famous Old Faithful geyser. Walking out among the various geysers and hot pools in the early cold morning is like being on another planet! Geyser eruptions streams and huge steam banks filled the atmosphere all around me. Being a cold 19 degree morning allowed the steam to really show off and play in the predawn light.