At the Valley of Fire in south Nevada there is a trail leading to ""The Rat's Tank", a real desert water hole. On the way there are many petroglyphs on both sides of the canyon leading to the tank. There are many signs information signs pointing out these petroglyphs.
Every one of them claim no one has ever been able to decypher them not even contemporary Indians.
". . . she and Nowell have shown that these markings are no mere abstract scribbles but appear to be a code . . ."
Since there has never been a translation or meaning other than "a picture", the caveman/indian must have been writing in code?
Chinese still write in pictures but at least they have memorized some kind of language to go along with it.
Now the Mayans . . .
yitbos
I will bet the glyphs say: water, this way; water ahead.
I remember reading somewhere that many of the Australian Aboriginal sacred drawings were maps and *deeds*, mostly to do with the presence and the *ownership* of water sources.