Forum Moderators: open
These images, taken by the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft, show the Galle Crater, an impact crater located on the eastern rim of the Argyre Planitia impact basin on Mars.Crater Galle, named after the German astronomer J.G. Galle (1812-1910), is informally known as the 'happy face' crater.
From ESA [esa.int].
Um, looks like a "smiley" to me. Still, at least it's much cheerier than that Cydonian [mufor.org] one!
:)
Syzygy