Back to Model RR Gallery DESERT MINE By Arizona Rock and Mineral Very realistic scenery can be achieved by covering the foam terrain with the real thing. Paint the foam with a diluted mixture of white glue, then spread granulated rock from Arizona Rock and Mineral over the wet glue. Overlapping several coatings of different colored and textured rock powders best emulates the real thing. Did you know that the many of the big rocks used in Hollywood sets are made from lightweight foam? That's how our heroes and villains survive all those rock slides and earthquakes. See Monument Valley for many great tips from Arizona Rock and Mineral.