re: New images of Adirondack.
New close up images of Adirondack:
http://marsrovers.jpl.nasa.gov/gallery/all/2/p/016/2P127783713EFF0327P2370L7M1.JPG
The soil at the top right corner looks dented as if it was pressed down.
More here: http://marsrovers.jpl.nasa.gov/gallery/all/spirit_p016.html
It has a granite-like sheen and doesn't look as porous as Pumice after all.
