The reader may find this short talk on cave drawing to be of interest. The symbols that are compiled and presented by Genevieve von Petzinger in the video are compared below to the symbols found on the Newberry Tablet and to the Paleo-Hebrew script from some 3000 years ago. (Symbols as depicted at oocities.org.)
“Written language, the hallmark of human civilization, didn’t just suddenly appear one day. Thousands of years before the first fully developed writing systems, our ancestors scrawled geometric signs across the walls of the caves they sheltered in. Paleoanthropologist, rock art researcher and TED Senior Fellow Genevieve von Petzinger has studied and codified these ancient markings in caves across Europe. The uniformity of her findings suggest that graphic communication, and the ability to preserve and transmit messages beyond a single moment in time, may be much older than we think.” -Ted Talks
Cave art as found by Genevieve von Petzinger
Newberry symbols compared to cave art.
Comparison of cave art to Paleo-Hebrew script circa 8th century BC.