Public Home > Space > Mars Reconnaissance Orbiter by dat… > 13 Feb 2008 > Dunes with Unusual Gully

Dunes with Unusual Gully

Seen here is the eastern edge of a dune !eld in a large, degraded crater in the southern
hemisphere. Similar to other dunes on Mars, these dunes are dark-toned and contain
gullies. Gullies are features found on slopes and dunes in the mid-latitudes of both
hemispheres. Both slope and dune gullies were once initially suggested to be a result
of liquid water from the surface or subsurface.

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