This <a rel="nofollow" class="external text" href="http://static.uahirise.org/images/2017/details/cut/PSP_009834_2645.jpg">2008 image</a> shows a portion of the North Polar layered deposits with lines of very small pits, only about 1 meter in diameter.
<p>Such small pits should be quickly filled in by seasonal ice and dust, so their existence suggests active processes such as faults pulling apart the icy layers.
</p><p>This is a stereo pair with <a rel="nofollow" class="external text" href="http://www.uahirise.org/PSP_009873_2645">PSP_009873_2645</a>.
</p><p>The map is projected here at a scale of 25 centimeters (9.8 inches) per pixel. [The original image scale is 33.3 centimeters (13.1 inches) per pixel (with 1 x 1 binning); objects on the order of 100 centimeters (39.3 inches) across are resolved.] North is up.
</p>
The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace &amp; Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.
NASA/JPL-Caltech/Univ. of Arizona
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