Thanks for the comments.
A couple more versions. I'm sorry the Tesla device has further deteriorated due to time. (melted parts via mesh displacer and surface eaten away by a power fractal affecting the opacity)
In one version the stones went totally fungoid on me and started looking like pancake mushrooms, but are so inflated with displacement that sometimes they show their individual polygons in the foreground.
I am using two stacked smaller Fake Stones directly input as the surface shader input of one larger Fake Stone shader. The stones on the ground are a separate group with the same textures as the others. The large Fake Stone shader has a small scale Strata shader applied.
People usually avoid stone accidentally building on stone by using merge highest shaders, but I thought why not try for some complexity by forcing little stones to comprise the actual surface of a larger stone.
Have to be quite careful with the displacement amounts with this method. The stacked displacements really balloon up and you can easily get not just torn surface exploding stones but torn surface exploding mountains.
