" our closest evidence is that the crustal lava chamber is expanding with molten rock . but we have no uncertain how long this motion goes on before there also is an eruption or the influx of flaming magma stops and the rafael deflates again , " added walsh . volcanic activity in yellowstone heats up underground water can create geysers of superheated water , and is responsible for the creation and continuing collapse of old cathedral .
There is a volcano in Yellowstone.