This blog post has a soundtrack, starting with the Singing Cowboy, Gene Autry. Just play the above video while you scroll down. (The photos below are better if you click on them to see a bigger version.)
Since that Gene Autry track is barely a minute long, here's another version of the cactus song to keep the soundtrack going. This one's by Bill Monroe, the Father of Bluegrass.
Cactus, movie rocks and a view of the San Fernando Valley to the south
A few movie rocks are sprinkled among the cactus, although Cactus Hill wasn't nearly as heavily filmed as other areas of the ranch. The hill was a hard place for film crews to access — and remains a little out of the way today.
Looking southwest from Cactus Hill
The foliage on Cactus Hill, and all over the Iverson Ranch, is much thicker than usual in the wake of Southern California's wettest winter in years.