The paintings are found on sandstone rock surfaces and include geometric motifs—lines, grids, and possibly anthropomorphic or symbolic forms. The pigments were probably made from mineral-based paints (such as red ochre/hematite). Their exact age is uncertain, but they are pre-contact (i.e., created before sustained Spanish presence in the late 18th century). Like many rock art sites in southern California, their purpose is debated. They may have had ceremonial or ritual use, be some kind of vision quest imagery, they presumably involve some kind of territorial or cosmological symbolism. Possibly they could have served as markers associated with trade routes or seasonal camps. So far, though, no definitive interpretation exists specifically for the Doheny site.
One of the Doheny pictographs is often described in popular accounts as looking like a “dinosaur”, it is a figure with an elongated body and projecting forms that some viewers interpret as resembling a long-necked reptile or even something like a brontosaurus. That resemblance has occasionally been used in fringe or creationist arguments to suggest humans and dinosaurs coexisted.
The figure, however, fits within the broader southern California rock art tradition attributed to the Acjachemen (Juaneño) and neighboring groups. Many figures are abstract, zoomorphic, or composite forms that don’t map neatly onto modern biological categories. This rock art often uses stylization, exaggeration, or symbolic distortion. What looks like a long neck or tail to a modern viewer may represent something entirely different (e.g., a mythic being, a bird, a quadruped, or a geometric/ceremonial motif). It seems more likely that the figure was a stylized animal (possibly deer, coyote, or other local fauna), or a mythic or supernatural being, or some symbolic/ritual image whose meaning is now lost. There’s no professional archaeological support for a literal dinosaur interpretation.Preservation aspects.
The pictographs are fragile and have already suffered from natural weathering (sandstone erosion), sadly - vandalism, and also urban development pressure. As a result, access is sometimes restricted, and their exact location is not widely publicized to protect them.
See: The Oakland Museum page: "The Doheny Scientific Expedition to the Hava Supai Canyon, Northern Arizona, October and November 1924". The expedition was led by Samuel Hubbard (Honorary Curator of Archaeology of the Oakland Museum) and Charles Gilmore (Curator of Vertebrate Paleontology, United States Rational Museum).





