Hypothetical question here, say I wanted to do a stone arch type of thing with that is like 10 feet wide. Plenty of space to walk across or fight on top or whatever, but I also wanted their to be grass on top of the arch. The grass is tied into the ground texture right? So how could I go about doing this? Would the only solution be to make my own model of grass and then use that instead or is there some way to pull it off?