Slightly larger image here:
http://thecrit.com/2008/08/05/nasa-mars-photo-leaked-wood-found-on-mars/
I don't vouch for the varicity of these things.
The site claims that "Earthrise" the photo where Earth is rising over the Moon is infact not the Earth and Moon, but the Moon is infact a UFO.
I think i'll pass on that as a varitable source!
Rich