OK, here is the basic setup for my hybrid Batcave. I wanted to make it look like the a mix of the cave from the comic, the cave from Begins and the Bunker from TDK.
I recently bought two Buffy the Vampire Slayer library dioramas quite cheaply with the intend of one being fashioned into a part of Wayne Manor. Particluarly the top half which lended itself to his bookshelf door which leads to the cave. That was scrapped as I could make better and working secret passages with card. But I like the overall shape of the diorama so I used it as the basis for the Batcave.
I wanted the cave to have to two level look we see often in the different medium. The Begins cave is huge and I couldn't possibly make an exact copy of it so. I'm pushing it as size goes as it stands. So I chose bits I liked. I wanted the foundations of the Manor to be part of the two levels because we see in Begins it is there that he keeps the Batsuit in a ornate cupboard. I also wanted like the cave wall had been cut close to the foundations to extend and include steps. I also wanted a location for the Batcomputer and a workbench, not to mention the Tumbler.
It will of course be modelled to look like natural rock for the most part but as I said this is early stages, I plan to use Newpaper and MOD ROC to achieve the cave walls.
Here you can see the "foundations". I'm only going to build them up this high. The pillars cut the walkway into the two areas, the one from Begins and the Comic inspired area. I like the idea of mixing the two.
I used card, polystyrene and packing tape. As well as the Diorama, but you could easily make that would of card or balsa wood.
More on this project as I make it.