" our best evidence is that the crustal magma chamber is filling with heated stone . but we have no idea as well this process goes on before there either is an earthquake or the inflow of volcanic rock stops and the macedo deflates again , " asked smith . volcanic activity in yellowstone heats up internal water which generate geyser of superheated water , and is necessary for the creation and continuous erosion of old faithful .
There is a volcano in Yellowstone.