HiRISE: High Resolution Imaging Science Experiment
New Images: 16 Jul 2008

Light-Toned Layers in Crater Wall
Light-Toned Layers in Crater Wall
The light-toned band may represent a well-defined layer of material within the crater walls.
 
Mystery Mounds
Mystery Mounds
The central mystery here: how did the rocks form, and why did they erode onto mounds?
 
Layering and Inverted Streams
Layering and Inverted Streams
The layering and inverted streams may have once extended further, but have been destroyed by expansion of Juventae Chasma.
 
Cratered Cones in Utopia Planitia
Cratered Cones in Utopia Planitia
The surrounding area of these features show they too, are battered by small impact craters and erosion.
 
Layered Rocks in Orson Welles Crater
Layered Rocks in Orson Welles Crater
Unraveling the history of these rocks helps provide a window into events in the Martian past.
 
Gully Alcoves at Very Top of Slope
Gully Alcoves at Very Top of Slope
These gullies near the top are deeper and originate in alcoves near the rim of the crater.
 
Central Peak Gullies
Central Peak Gullies
One idea is that water could have been trapped when the central peak formed, and ice melted later to form the gullies.
 

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HiRISE Operations Center
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