The symbolic representation of opposing forces is accomplished in ancient Native American writings by the same concept used in modern script; there are 'good guys' and 'bad guys'. The concept of good and bad is old as human existence, only the 'perception' of good and bad changes with time. In the 1800s the American Indian was perceived as bad. Today, Native Americans are considered 'good', but greedy.
To understand the various symbols representing opposing forces, simply requires watching an old western; the good guys wear white hats, the bad guys wear black hats. The ancient Native Americans used the same 'symbology', white means good, black means bad. In petroglyphs, pecked/rubbed/scratched lines and areas represent black or bad, non-pecked/rubbed/scratched areas represent white or good.
The graphic above speaks for itself, but not all petroglyphs are about opposing forces, good and bad. Care must be taken so that perceived 'colorization' is not misinterpreted.
Colorization alone did not meet the author's needs when Dictionary Rock was created. The author chose to represent the opposing forces as an oval and rectangle. In lieu of pecking out the interior of the rectangle, the author chose to leave the patina in tact so that vertical lines could be applied to represent the size of the group. Therefore, it was not the colorization alone that identified the opposing forces, but the closely assimilated shape of the symbols.
More will be added to this page as our knowledge increases...