All these models were scanned, and photographed in the same region of Germany so they will fit in well together. The rocks are not watertight, and open to the bottom as i couldnt find a way to lift them to scan them from all sides.  From my experience it looks great of you use the small plant model a lot, as it has only 37 verts, but can make the ground look much more lively by adding parrallax to it.