This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
PSM The great geyser of bjarnafell iceland. Schematic diagram of the great geyser of Bjarnafell Iceland archive org Popular Science Monthly Volume Author PDold Popular Science Monthly illustrations Diagrams of geysers Great Geysir Volcanology in Iceland Volcanological diagrams Geological cross sections of Iceland Diagrams of