" our best knowledge is that the crustal magma cavity is lining with molten rock . but we have no idea that long this process goes on before there either is an eruption or the remittance of molten rock ... and the magma deflates again , " added smith . that eruption in yellowstone heats up surface water which generates geysers of gases oil , and is responsible for the creation and continuous eruption of old faithful .
There is a volcano in Yellowstone.