Time to unravel the mystery of the tiny Martian pyramid. Via the NASA Jet Propulsion Laboratory:
The drive by NASA’s Mars rover Curiosity during the mission’s 43rd Martian day, or sol, (Sept. 19, 2012) ended with this rock about 8 feet (2.5 meters) in front of the rover.
Curiosity is about 8 feet (2.5 meters) from the rock. It lies about halfway from the rover’s landing site, Bradbury Landing, to a location called Glenelg. In coming days, the team plans to touch the rock with a spectrometer to determine its elemental composition and use an arm-mounted camera to take close-up photographs.