" our only proof is that the subduction magma chamber is filling with molten rock . but we have no idea that late this event going on before there possibly is an eruption or the inflows of molten rocks ... and the caldera deflates again , " added thompson . volcanic activity in washington heats up underwater waters or created geysers of condense water , and is responsible for the creation and continuous eruption of old faithful .
There is a volcano in Yellowstone.