Lower left:  Color image from Pancam of the outcrop (looking north) acquired on 
Sol 4.  Upper image is a monochrome (single filter) image showing color spots 
from which spectra were extracted for the dark soil above the outcrop, the distant
horizon surface, a bright rock in the outcrop and a darker rock in the outcrop, 
in addition to a small dark cobble.  Spectra from these regions are shown in the
plot.  
USERNAME: jrjohn