Geothermal energy. Energy. Steam and water. A geyser is under pressure. High pressure.
The earth holds enormous amounts of energy. We like to use this energy as we are faced with an ever increasing demand. However, in most places, this earth energy is hard to reach. Yet, in a handful of locations, this energy can be found immediately below the surface of the earth, or in some cases, even on the surfaces. Take Iceland for example. Geysers regularly eject a mixture of steam and hot water high up in the sky: free energy.