Updated on MFS - Strange But True - Places 6
Yellowstone "Super Volcano" sits on top of three overlapping calderas. (USGS)
The loosely defined term 'supervolcano' has been used to describe volcanic fields that produce exceptionally big volcanic eruptions. Thus defined, the Yellowstone Supervolcano is the volcanic field which produced the latest three supereruptions from the Yellowstone hotspot.
Read more about it on MFS,with videoclip.