http://en.wikipedia.org/wiki/Yellowstone_Caldera http://en.wikipedia.org/wiki/Yellowstone_Caldera sits on top of http://en.wikipedia.org/wiki/Yellowstone_hotspo

http://en.wikipedia.org/wiki/Yellowstone_Caldera http://en.wikipedia.org/wiki/Yellowstone_Caldera sits on top of http://en.wikipedia.org/wiki/Yellowstone_hotspot http://en.wikipedia.org/wiki/Yellowstone_hotspot Hotspots seem to be unaffected by plate movements - plate moves but hotspot remains in place. That's how Hawaiian island chain has formed, actually.