New Form of Lava Flow on Mars
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New Form of Lava Flow on Mars

May 1, 2012
Cooling lava on Mars can form patterns like snail shells when the lava is pulled in two directions at once. Such patterns, rare on Earth, have never before been seen on Mars. This image, with more than a dozen lava coils visible, shows an area in a volcanic region named Cerberus Palus that is about 500 meters (1640 feet) wide.

Photo by: NASA/JPL-Caltech/UA

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