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| | Catalog Page for PIA03796 (Site not responding. Last check: 2007-10-03) |
 | | This polygon pattern is relatively common in the northern plains of Mars, and are primarily located in Acidalia Planitia, Elysium Planitia, and Utopia Planitia. |
 | | Utopia Planitia became "somewhere" for the first time, however, when its first visitor, the Viking 2 lander, settled down and analyzed the area. |
 | | Because Utopia Planitia is a volcanic region of Mars, these rifts in the surface could have formed when volcanic material cooled and then contracted. |
| photojournal.jpl.nasa.gov /catalog/PIA03796 (499 words) |
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