27 January 2016 

Pit Crater near Elysium MonsPit Crater near Elysium Mons
Pit craters are simply sink holes in the ground with near vertical walls and floors that are only visible when the sun is high in the sky.
A Tale of Two FlowsA Tale of Two Flows
We will need to study this image in more detail to understand how these flows have interacted with each other and what they can tell us about their composition.
The Changing SandsThe Changing Sands
These barchan dunes have been imaged at least five times already, and each time, a bit more movement is revealed.
Jarosite in Noctis LabyrinthusJarosite in Noctis Labyrinthus
The jarosite-bearing deposit observed here could indicate acidic aqueous conditions within a volcanic system in Noctis Labyrinthus.
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