NASA has released some fascinating new images of Mars which reveal bizarre natural sand patterns that bare a striking resemblance to Morse code.
In a post entitled Martian Morse Code , NASA explains that that they are in fact Martian sand dunes which have been influenced by local topography .
While it might look like a Martian version of the Nazca Lines, there is sadly a perfectly reasonable explanation for these odd-looking geographical features.
The shape and orientation of dunes can usually tell us about wind direction, but in this image, the dune-forms are very complex, so it s difficult to know the wind direction.
The patterns themselves sit within a large circular depression, most likely an impact crater.
According to NASA the circular depression is most likely a very old crater, which in turn has then protected the dunes from more severe winds.