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Wednesday, October 16, 2019

Not only Valles Marinaris, but also Ma'adim Vallis is...



Not only Valles Marinaris, but also Ma'adim Vallis is significantly longer, wider, and deeper than Earth’s Grand Canyon at over 700 km long, 20 km wide, and 2 km deep. (📷 Viking) via /r/spaceporn https://ift.tt/2MlYEin


from Tumblr https://ift.tt/2VKsb8K

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