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Future Martians might marvel at the Valles Marineris (a.k.a. Mariner Valley) the same way Earthlings marvel at the Grand Canyon. The huge rift is more than eight times the length of the Grand Canyon, and four times as deep.
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Rescooped by Skuuppilehdet from 1Uutiset - Lukemisen tähden |
Scoop.it!
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