It's common knowledge that Yellowstone Park sits on top of an ancient supervolcano, but what happened last time it erupted?
Yellowstone Has a Young Volcanic Vent With a 'Fiery' Surprise Beneath the Surface, Stuns Experts Yellowstone National Park ...
According to the Yellowstone Volcano Observatory, it’s probable that this new hydrothermal feature is connected to activity ...
Yellowstone's volcano is not extinct ... out for miles beneath us and a few little hills to the north—old lava domes. But I can't follow the caldera rim visually because much of it is beneath ...