unusual pebble shape

(Paul Morris) wrote in message ...
In the "mission success" panorama

http://origin.mars5.jpl.nasa.gov/gal...B009R1_br2.jpg

there is visible a pebble or small stone that has a
very unusual shape: it appears to have two "stalks"
that protrude upwards (rather like the stalks
or antennae of a snail).

Actually it looks more like the Energizer Bunny