I would guess about 50% of people know this, and I should not take it for granted that everyone does. But Yellowstone sits on top of a giant caldera, and it's due to go off any time (at least, geologically due!) If you look at a map of Yellowstone from above, you can see the clear outline of the caldera. When the mega-volcano strikes, it'll be a doozy!
Digitally printed on high gloss Premium Photographic Paper resulting in a unique silver pearlescent finish with stunning visual impact and depth that is suitable for museum or gallery display.