This image shows some of the cratered terrain of Mars.
Click on image for full size
NASA
Martian Cratered Terrain
This is an example of the cratered terrain on Mars. Almost the entire surface of Mars is cratered to various degrees. The Tharsis Ridge, where the volcanoes of Mars are located, is lightly cratered. The lowlands of Mars are moderately cratered and so have not really been resurfaced, but the highlands of Mars, in the southern hemisphere, are heavily cratered, as shown in this image, which means that the southern hemisphere is a very old portion of Mars.
This cratering pattern provides evidence for the possibility of continental drift early in the history of Mars.
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