This observation was requested to look at some unusual surface textures in Amazonis Planitia. Some of the terrain grades into ridges that could possibly be invasive dikes or lava intruding into overlying ash. Despite the features in this image, Amazonis Planitia is one of the smoothest plains on Mars, and is located between the Tharsis and Elysium volcanic provinces, to the west of Olympus Mons.