In article , (Paul Morris) wrote:
See

http://origin.mars5.jpl.nasa.gov/gal...FF8600P2584R1M
1.JPG

in the lower left corner. (This is at the Spirit site.)

To my untrained eye, it resembles a mass of decayed vegetation.
Unfortunately, it appears to be on a fairly steep slope that might be
inaccessible to the rover.

Paul

There are pics of that rock in some of the images from sol 161, from the side.
Just another odd shaped rock.

http://marsrovers.jpl.nasa.gov/galle...F6900P2375L5M1.
JPG
http://marsrovers.jpl.nasa.gov/galle...F6900P2375L5M1.
JPG

Fox2