This improved image of Epimetheus was released to the Cassini site yesterday and as compared to this more raw image post from December 8, it is most notably cleaner, processed in color and appears to be much sharper.
This is a view of the moon’s more southern pole and there is speculation that covering a majority of this face is actually one large impact crater which could explain it’s flattened appearance. There also seems to be what looks like a deposit or “dusting” of material all over this face which seems to blanket flat areas and begins to fill some craters and other depressed regions. The moon is only about 70 x 50 km in size, approximately the size of a city such as Los Angeles.