First again, I built
the corpus with the measures from the Secret Ceremony diorama. For
the top plate I took not acryl glass but wood. The top plate is
8cm shorter than the ground plate, because light should fall into
the entrance of the cave.
Then, I built with Styrofoam, fly net and newspapers the inner shape
of the cave.
Then I surfaced all with plaster. Finally, I painted the cave white
and mounted Luke, his lightsaber and the Wampa.
As a last thrill, I built with FIMO a skull-, torso- and thighbone;
also I stuck Ice pikes from LGB in. Absolutely the last action was
to mount the front-glass and the glass for the 8cm width "halo"
at the backside of the top plate.