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The Ketetahi
geothermal area, Tongariro.
PhotoF B-P.
| "Sometimes magma cools slowly for hundreds or even thousands of years below the surface. Escaping gases heat the adjacent rocks which, in turn, heat ground water which generate steam. Hot water and steam rise to the surface to form hot springs and fumaroles." Excerpt from Anderson: Tongariro, A Volcanic Environment |
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