Bobby, I didn't mean to ignore your request. Your post came as I was writing mine. All the displacements and image sizes are adjusted for the size of the stones, so my set up is all set to work for these 23 meter stones. If you drop something like that on a 1 meter set of stones it will not work. I'll have to work up something to share. Meanwhile this is what the actual network looks like for the surface of the 23 meter stones. The images shaders seen on the right hand side were some bump maps of other of my rock photos, only for small displacement not color (and probably needless).
The apparently unconnected Displacement shader should have a kind of standard crack shader network attached, but they are small size and not too visible in the render.
The texture tiles I used in this render, from my own rock photos, are too big to fit here, even zipped, so I made some smaller ones. For my render I chose projection in X, not the usual Y, because as you look at this scene you are looking at sides of large rocks along the X axis. Another reason this would not be plug an play.
