I've added more strands of hair, constructed the buried hand/fingers which will bar the entrance to the cave, and added a mostly buried foot to the base of the small cliff. Next up I'll complete the layers of moss/grass, add some trees/plants, and some vines/roots for Herbie to climb.
I'm finishing up another big set piece, the entrance to the cave in "Unearthed", the mouth of the buried stone giantess. The fingers are rigged with armature for twitchy movement. Gonna add more "hair" and a layer of spackle over the whole thing to rough it up a bit and give it some stony texture. I'm working with layers of plaster wrap right now, and the hand is a rubber Halloween decoration that I picked up a couple of years ago.