 The crocs lair was constructed and shot in a warehouse in Maidstone  (Melbourne Victoria Australia) which was the same site for much of  internal barn shots in Charlottes Web (2006). With story set in the  rugged Northern Territory and much of the shooting done there also  many would be surprised to learn that many of the "island" shots  were done in a man made lake in country Victoria. The art department  and the greens department being responsible for making the rocks and  trees resemble those in the Territory.