Unusual rocks on Mars by ToddCriste from the GigaPan Curiosity Mars Rover Landing Site Panorama by JPL News
This photo is from the Mars Lander and has not been altered. the larger rock to the left looks like if may have been shaped and cut. To the right is TWO rocks that appear to be Pentagonal in shape. The one towards the middle appears to be vertical and has a circular hole/depression in it. Anyone that would like for me to point out the location of these rocks on Nasa's Mars Panoramic photo, please feel free to contact me and verify the pic for yourself.
Todd - firstname.lastname@example.org