The Ancient Historical Research Foundation has done much to research and make these interesting glyphs available to the public.
The image of this first glyph was taken by me in the mountains near Fillmore, Utah. The rest of the images are reported by the Ancient Historical Research Foundation. Their website for these glyphs is at https://mysteryglyphs.com. Great care has been taken to present to you the pictures. Exact locations are typically not discussed. There is always of fear of vandals defacing the artifacts.
The age of these petroglyphs are not known. But specifically due to the representation of a rifle on the New Mexico glyph, this indicates that they were all probably created in the 1700s or 1800s. What is really interesting is that several of the symbols are Egyptian, but the language is not Egyptian. It seems to be a mostly lost pictographic language used by Native American Indians in the past.
From the Mystery Glyphs Website at https://mysteryglyphs.com
This article by Leigh Marymore demonstrates a well researched effort at deciphering the meanings of the symbols.