Some interesting results. I sometimes tend to think of FlightGear as a "simpler" flight simulator in that it doesn't have FSX's bells and whistles, but every once in a while I'm reminded that it does have some nice tricks up its sleeve occasionally.
http://wiki.flightgear.org/Procedural_Texturing#The_rock_effectProcedural rock grand Canyon
![](http://wiki.flightgear.org/images/thumb/b/bb/Southwest04.jpg/400px-Southwest04.jpg)
Interesting rock effect
![](http://wiki.flightgear.org/images/thumb/7/79/Rock-example1.jpg/500px-Rock-example1.jpg)
Another
![](http://wiki.flightgear.org/images/thumb/9/92/Rock-example2.jpg/500px-Rock-example2.jpg)