The most complex candidate for petroglyphic rongorongo is what appears to be a short sequence of glyphs, one of which is a ligature, carved on the wall of a cave.
Den mest komplekse kandidat for petroglyffisk rongorongo er, hvad der synes at være en sekvens af hieroglyffer, hvoraf den ene er en ligatur, indhugget i vægget i en hule.