The presence of a zoomorphic face in this posterior of the mammoth position, even though crude and faint, helps confirm this known element of mammoth depiction motifs as seen in other portable rock art pieces. You may use this illustration to help identify this interpreted face on the unmarked photo at (top). The feline presence here on the mammoth posterior may reflect its position as a "helper" in creating access to mammoth as a food resource in the form of carrion.
Scot Stoneking of Massilon, Ohio, has written a book on the cupstone and has replicated through experimentation how many of them were likely created. An article he wrote on the subject was published in Ohio Archaeologist and is also available in .pdf format for download.
-Don's Maps Maybe this stone expresses the idea "More fish please."