Curiosity has photographed these head shapes on Mars November 23, 2012
The photo that intrigues us as a reference: MASTCAM LEFT SOL 107. The photo was taken by the robot on the ground on Mars “Curiosity” November 23, 2012, and published online December 1, 2012. Above I Blew and I red arrow HEADS these forms of strange, as grouped by “Chance” at the same place … :

See the series of photos on the official website here:
http://curiositymsl.com/?page=2&limit=100&tzone=local
The photo that interests us here:
http://mars.jpl.nasa.gov/msl-raw-images/msss/00107/mcam/0107ML0682051000E1_DXXX.jpg
UFO (UFO) and strange shapes on Mars photographed by Curiosity:
Mars Curiosity Images
I have gathered extensive evidence of a large explosion and planetary disaster from the Mars Curiosity images.
There are hundreds of mummified and fossilized remains of creatures in Gale Crater – with UFO crash sites and even unexploded bombs.
If you take a look at my YouTube videos then you will see for yourself – if you compare the videos back to back, there is a load of evidence – here’s a link – my many new videos >.
http://www.youtube.com/user/joewhitesoundisciple?feature=watch