One small section of this image shows boulders that have rolled down the slope of a crater wall, with the largest one approximately 6 meters across.
This image has low-sun lighting that accentuates the many transverse ridges on this slope, extending from Euripus Mons.
|Einstein and Mars|
In February 1917, Albert Einstein wrote in a letter: "It is a pity that we do not live on Mars and just observe man's nasty antics by telescope."
|Mesas and Pits|
What's up and what's down? This image covers mesas, or high-standing plateaus, to the north and pits, or low-standing, depressions to the south.
This region of Xanthe Terra has mostly been contracted due to thrust faulting.
|North Polar Gypsum Dunes in Olympia Undae|
Unlike most of the sand dunes on Mars that are made of the volcanic rock basalt, these are made of a type of sulfate mineral called gypsum.
|Colorful Bedrock in the Central Uplift of an Impact Crater|
Large impact craters rebound from the initial shock, raising deep bedrock to the surface in the central uplift of the crater.
|A Meandering Channel on Hellas' Rim |
These gentle curves imply that a paleoriver carried lots of sediment along with it, depositing it into Hellas about 4 billion years ago.