The petrified wood logs range in color and quality. With the ranch is situated on the Puerco Ridge area, which is known to be a top producer of colorful logs, as can be observed if one follows the Puerco Ridge westwards into the national park area, where the area called Rainbow Fields is located. Further west, on the sections adjacent to the parks western edge, is Jim Gray’s digging operation, where a treasure-trove of petrified wood has been mined over the last 20-30 years.
The ranch produces both rainbow wood as well as milky wood, which has various colors floating in a milky white center or background. It also has blackwood, another form of the connifer pine that was the prevalent tree in this Triassic forest, as well as Woodworthia and Schildaria varieties.
Along with abundant petrified wood, half a dozen fossil sites have been explored, with agatized bone and skulls from phytosaurs, desmatosuchus, and other unidentified Triassic reptiles.