Yes, interesting take on the Petroglyphs. However, I find the explaination(s) to be a bit of a stretch. In order to try to gain an understanding of the possible meaning of the Petroglyphs of Black Canyon, the dates of they're creation becomes crucial.
The dates so far range from between 15,000 years through to 7,000 years old.
Interestingly enough, just as pointed out in the linked material in your post, Eliakim, is locating the symbols that seem to be commonly found elsewhere. The symbol I am using as a marker of sorts, is the Sacred Circle or Medicine Wheel.
If you look up the details of the Medicine Wheel within various sources, you will notice that it is said that it was used by cultures in the South-Eastern region of Canada and down into the Mid-west region of North American. They have dated those Medicine Wheels as far back as 7.000 years old.
This struck me as odd.
Why the "wheels" within Black Canyon date "up to" 7,000 years old, and then the Big Horn Wheel is considered part of a vast set of old Native American sites that document 7,000 years of their history in that area.
Take a look at this photograph of the following Petroglyphs.
The symbol of the medicine wheel can be seen several times. From what I understand through my research is that the Medicine Wheel represents the cycles of existence. The individual that is creating the particular inscriptions, will inscribe a Medicine Wheel, representative of his/her life, and then add "shields" around his "wheel" for a variety of reasons.
If you study the photograph, you can see that some of the wheels are indicitive of different dates of inscription. The faded inscriptions obviously the oldest. Now, in looking at the Wheel on the right-side of the rock, it has an X within a specific quadrant of the Wheel.
It is known that different quadrants represent different seasons, so, is our ancient friend indicating a particular "time" ? Then describing events, things seen, prayers of certain wants, around "his/her" own life --- "attached to" and relative to his own circle of existence.
The explaination of the Wheel seems reasonable.
IF anyone stands in an open field, and then rotates around looking along the horizon in a 360 degree circumference, from an observational perspective, your life's world would appear to be contained within a circle.
This is further reinforced with observations of celestial objects. The Sun, the Moon and the Stars all appear to be circles. And then, we have a cyclical pattern of seasons. They come and they go, to once again return.
The Circle also has quite a bit of depth to it as far as symbology. The division of the Sacred Circle into four quadrants represent not only the specific seasons, but also mark direction, N, E, S and West. And the different points along the outer line of the circle, have certain "powers" assigned to each of the points. Whether that may be of the four elements, or the spirits given to those quadrants.
With the Big Horn Medicine Wheel, the major differences are 1) additional spokes 2) created on the ground, and is not an inscription.
There seems to be a difference with use of the different formats of the Wheels. The Big Horn Wheel also was used for celestial alignments.
Big Horn Medicine Wheel and its Alignments
The additional spokes also are representative to additional spiritual influences or powers.
As the people of the Black Canyon Culture possibly migrated to the East, and made contact with other groups, the wheel began to evolve.
Hard to ingnore that the faded wheel on the left side of the rock in the photo is dated some 12,000 years old, the one on the right, dated around 7,000 years old, shows that for many thousands of years the basic symbol did not change.
For whatever reason, the area was abandoned, and nobody really knows where the people went. However, it seems to me that the Big Horn Medicine Wheel is a clue.
This is what is said about the Medicine Wheels :
" Between 70 and 150 wheels have been identified in South Dakota, Wyoming, Montana, Alberta, and Saskatchewan. "
However, these are Wheels constructed on the ground. IF we are to take into consideration that the inscriptions of the Medicine Wheel are earlier versions of the same, then the use of the Wheel is much older.
In recognizing the different uses of the Wheel, depending upon whether it is an inscription or constructed on the ground, helps with trying to figure out the meaning of the other Petroglyphs.
IF the inscriptions are of a more personal nature, then so would the other inscriptions be, as well. It is then we have to try and connect personal experiences, wants and desires to the different "shields" that surround the inscribed wheels.
In the Black Canyon region, there are upwards of 10,000 Petroglpyhs. So, there are numerous inscriptions that were created, and each set more than likely had different intent, or messages to convey.
I feel that the direction the inscriptions face might have different meanings, as well.