The Martian volcano Hadriacus Mons, imaged by #MarsExpressHRSC in June 2004. This volcano appears to be built primarily from ashfall deposits. These deposits are easily eroded, producing the distinctive gullied appearance. pic.twitter.com/8OYG6ICKEr
— Justin Cowart (@jccwrt) April 10, 2019
via Twitter https://twitter.com/jccwrt
April 10, 2019 at 05:46AM
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