The petroglyphs, which date from about 900 CE to 1400 CE, show a very wide variety of subjects including animals, plants and human faces, as well as geometric designs. The identification of the more concrete subjects is easy, but their significance and that of the abstract designs have received multiple controversial interpretations, including, as the usual catch-all, religious symbolism. These photographs mostly show petroglyphs that are on the west-facing side of the ridge. The east side was in deep shadow at the time of my visit and could not be advantageously photographed.