Okay, I looked at the second set of 4 pictures from Hell's Canyon (don't know why I didn't see them before - they were right next to the first set, but I didn't see them the first time). and looked at the "sinbad" pictograph. Admittedly, I see more similar ity between the Hell's Canyon humanoid and "sinbad" than I do with the 7 mile one, but they are very different overall (the "headdress" in particular). The six fingers are confusing. Did the "artist" just miscount? or did the individual actually have six fingers? (don't tell Von Danikin - it will be proof positive aliens visited Utah - course that might explain a lot lol ). There needs to be a lot more evidence to connect these various glyphs to the same culture. Rock art is a difficult medium - scratching the top layer of rock off to actually make an image. For me, the 7 mile set doesn't smack of a comet in the least. The Hell's Canyon one is suspicious. It might be, but again it is next to and below the humanoid's head - not above . It might be a flaming ball of fire (from a lighting strike) or maybe a bolide - not a comet at all. Carbon dating is the first step, to MAYBE make a connection to an astronomical event around the same time. Unfortunately, even after that, it will still mainly be theoretical. We as 20th/21st century, educated in a whole different fashion, beings need to be real careful when we look at rock art and not look at it as an ink blot test. Tho se ancient indians were very simple, eeking out a mini mal existence in a very difficult and tempermental land. We can't say, "oh it looks like XX to me." We have to ask the question "what did it look like to them? " As they had no written language and their tribal organization was minimal, what they saw and recorded as valuable, or important, may not be anything we can connect with. As for Von Dell Chamberlain - he was an expert on the Pawnee and other more established, traditional tribes back east. No doubt he tramped around these sites for his own experience and might have an opinion. There's a guy, named Nal Morris? or Morrison? talked to the club before, about rock art/ancient calendars and such - I have a notebook of his somewhere. All I remember is the "zipper" glyph. He makes a good argument for his position. He has spent years studying these glyphs. He might have an opinion about the Hell's Canyon one. It would be interesting to hear his take on it.