Thanks for the comments.
As far as displacement, the funny thing is I'm
not setting up "crazy displacement levels" to get what are admittedly outlandish outcrops.
In fact only displacements of 0.4, -0.02, and 0.01 meters are being added.
I don't believe that technically the big features are fully intact in the sense of being unbroken 3D surfaces, but I liked the bizarre over the top effect.

All I'm going to say at this point is that the big features are 675 meter size fake rocks with a tallness of 1.