Ключевые слова: american, ancient, animal, antelope, art, canyon, carved, civilization, communication, culture, detail, discover, drawing, elk, etching, explore, glen, graffiti, grand, hieroglyphs, history, language, message, messages, native, old, painting, passing, past, petroglyph, pictogram, prehistoric, southwest, stone, story, symbol, symbolic, tell, time, translate, translation, wall, writing,