I reallly was'nt intending for it to be rebar, instead, it was intended to be wood. Although, rebar would look much better now that you mention it.
By the way, whats the best way to make rubble. I need to add a rubble pile of sorts infront and behind the hole. Wood is easy, so is plaster (i simply put some putty on a peice of scrap, let is dry, then sand is over the area i want it at) but what would i use for chunks of brick, stone, etc?
Thanks!
Cheers mates!