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Seasonal Changes in Dark Marks on an Equatorial Martian Slope
Seasonal Changes in Dark Marks on an Equatorial Martian Slope

These images from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter show how the appearance of dark markings on Martian slope changes with the seasons. The marks, called recurrent slope linea, extend down slopes during warmer months and fade away during cooler months. This animation shows the same location at several times of year. The location is in a crater on the floor of Valles Marineris, near the Martian equator.

Image credit: NASA/JPL-Caltech/Univ. of Arizona

Page Last Updated: December 10th, 2013
Page Editor: Kimberly Orr