Lots of anomalies in this pic, that does look like the mayan style of carving. Here is another but more egyptian style and possibly not referenced around a homonid. It does have the serpent headdress though.
link to image:
www.nasa.gov/images/content/708545main_pia16453-43_full.jpg
some drawn lines on that rock?
semi circle
bouncing ball on mars?
