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Valles Marineris - Simple English Wikipedia, the free encyclopedia
Valles Marineris
is a
canyon
system on
Mars
. It is 4,000 miles (6,400 kilometres) long.
[
1
]
References
[
change
|
change source
]
↑
"Mars Exploration: Multimedia"
.
mars.jpl.nasa.gov
.
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