Yes. Once again, all other methods fall short of computer generated imagery. Here's how to do it in this case. Shoot your actors on a rock floor piece, similar in look and texture to the cavern. Create a so called wire frame, which is a skeleton like structure in the basic shape of the cavern. Next, add surface to the structure along with a few torches and lighting for ambiance, a few digital bats and viola, your cg cavern is ready for business.
