At last!...Spirit's cameras image Ultreya deposits.
Go to the MER website, and surf over to the Spirit panoramic raw images for Sol 667.
Well?... It's not an abyss, Doug Ellison.
It looks like an dark...very dark [maybe even black] outflow of material just peeking
out around Haskin Ridge.
What is it?
Unoxidized iron?
Ground up, powdered remains of those infamous blueberries?
hydrocarbon-stained martian dirt?