Feel the steam from underground freshwater reservoirs as they rise to the surface! As waters below climb upward for miles beneath the surface, volcanic activity heats the water molecules and releases steam at the Earth’s surface. Another method for creating steam at these Volcanic Steam Vents
occurs when rainwater seeps underground and is warmed by rocks heated from the lava below. The heated water then rises upward through fissures and condenses when it hits the cool air.
These volcanic steam vents have been here since Hawaii Volcanoes National Park
first opened in 1916.