Volcano Ice Interactions
Large amounts of water ice are believed to be present under the surface of Mars. Some channels lie near volcanic areas. When hot subsurface molten rock comes close to this ice, large amounts of liquid water and mud may be formed. Hrad Valles in the Cebrenia quadrangle is close to Elysium Mons, a large volcano, and may have supplied water to create the channel. Hrad Valles is pictured below.
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Hrad Valles may have been formed when the large Elysium Mons volcanic complex melted ground ice, as seen by THEMIS.
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Streamlined islands in Hrad Valles, as seen by HiRISE.
Read more about this topic: Cebrenia Quadrangle
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—Ralph Waldo Emerson (1803–1882)
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