"Headless": just like NASA... - Sol 117

Caption NASA:"The Robotic Arm on NASA's Phoenix Mars Lander slid a rock out of the way during the mission's 117th Sol (such as Sept. 22, 2008) to gain access to soil that had been underneath the rock.The Lander's Surface Stereo Imager took the two images for this stereo view later the same day, showing the rock, called "Headless", after the arm pushed it about 40 cm (16") from its previous location.

"The rock ended up exactly where we intended it to", said Matt Robinson of NASA's Jet Propulsion Laboratory, RA flight software lead for the Phoenix team.

The RA had enlarged the trench near Headless 2 days earlier in preparation for sliding the rock into the trench. The trench was dug to about 3 cm (1,2") deep. The ground surface between the rock's prior position and the lip of the trench had a slope of about 3° downward toward the trench.
Headless is about the size and shape of a VHS videotape".