File:ESP 049371 2175 (34969754253).jpg

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DescriptionESP 049371 2175 (34969754253).jpg	Flow with a Double Ridge — The objective of this observation is to confirm a trimline (a higher level for a glacier) in a flow coming out of a valley in a mesa. If this is indeed a trimline, then the glacier could have been far higher in the past. That may mean that conditions for glaciers existed over a long time period. NASA/JPL/University of Arizona (Acquired: Feb 2017, approximately 297 km above the surface. www.uahirise.org/ESP_049371_2175)
Date	4 July 2017, 15:31
Source	ESP_049371_2175
Author	UAHiRISE (NASA)

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current	20:36, 20 June 2018		7,680 × 4,320 (4.87 MB)	Meisam (talk \| contribs)	Transferred from Flickr via #flickr2commons

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