It seems that the point of the railroad is to attract young visitors to the park (and a few older ones too). The scenes include the the Grand Canyon with a depot at Williams and the hotel at the rim. Other operations included mining and lumber.
In general, it is very entertaining for the regular visitor and my 3 year old was glued to the fence for over an hour.
Nice surprise in addition to the cactus and bighorn sheep. Actually, they have quite a few more animals now including Giraffe, Zebras, Hyena, snake, camel, some cats and many others. Worth visiting if you are going to Palm Springs.
Now, even more pressure to get something working at home.
Craig.