The detailed backstory, while present in park literature and training materials, is not communicated to park guests directly. The station buildings on all four versions of the ride are themed to appearance of a mining company office from the mid to late 19th century. In the Disneyland park, there is music and laughing in one of the saloons of Rainbow Ridge, and a typewriter is heard from a newspaper office. The mountains themselves are themed to the red rock formations of the American Southwest. The rock work designs in the Disneyland version are based on the hoodoos of Bryce Canyon National Park in Utah. In the Florida, Tokyo and Paris versions of the ride, the rockwork designs are based on the rising buttes that are located in Arizona and Utah's Monument Valley. Special care was taken by the Imagineers to make it appear that the rocks were there originally, and the track was built around the rocks, unlike a number of earlier mine rides, which were built the other way around (by sculpting the rocks around the tracks). There is also a dinosaur skeleton that the train passes by in all versions of the ride except the Paris version. A cracked eggshell is nearby, and there is a pleasant lake with water that is shot up while the train passes on the warmer days. Sound effects of a typical locomotive operation are piped into the surrounding scenery to add realism to guests viewing the ride from observation platforms, including the steam whistle sounding, even though there is no whistle displayed on the locomotives.