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AZ045161 this spiral petroglyph at Signal Hill is from the Hohokam culture in Saguaro National Park, Arizona ©Dennis Flaherty
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| AZ670185 petroglyphs on Signal Hill in Saguaro National Park, Arizona ©Dennis Flaherty
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| AZ670185sh petroglyphs on Signal Hill in Saguaro National Park, Arizona ©Dennis Flaherty
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| AZ670185vV petroglyphs, from the Hohokam culture, on Signal Hill in Saguaro National Park, Arizona ©Dennis Flaherty
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AZ670185vV petroglyphs on Signal Hill in Saguaro National Park, Arizona ©Dennis Flaherty
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| DN350124 Dinosaur National Monument, Utah ©Dennis Flaherty
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| DN350136 Dinosaur National Monument, Utah -the "princess" petroglyph ©Dennis Flaherty
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| DN350145 Dinosaur National Monument, Utah-'Kokopelli' petroglyph ©Dennis Flaherty
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DN350175 a lizard petroglyph at Dinosaur National Monument, Utah ©Dennis Flaherty
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| ES045359 these petroglyphs overlook Chalfant Valley and the White Mountains in California ©Dennis Flaherty
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| ES045382N These abstract Curvilininear petroglyphs overlook the Owens Valley, California ©Dennis Flaherty
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| ES045382N These abstract Curvilininear petroglyphs overlook the Owens Valley, California ©Dennis Flaherty
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ES045382N These abstract Curvilininear petroglyphs overlook the Owens Valley, California ©Dennis Flaherty
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| ES045382Ncrop2 These abstract Curvilininear petroglyphs overlook the Owens Valley, California ©Dennis Flaherty
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| ES045382Ncrop2 These abstract Curvilininear petroglyphs overlook the Owens Valley, California ©Dennis Flaherty
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| ES045382Ncrop2 These abstract Curvilininear petroglyphs overlook the Owens Valley, California ©Dennis Flaherty
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