A social and/or notice board and is not so much for discussing Grahams work, or related topics as covered by the other boards, but more like a place where people can share other things.
I think my son and I drove past that work in progress a few months back. If it is what you are talking about, it is near Liverpool by the freeway. I just asked my son and he remembers it more than I do. We think that at the time we saw it, it was quite a large pile of dirt being shaped into a pyramid. We assumed that it was going to be some sort of freeway sculpture like the ones by the Melbourne freeways, though the ones in Melbourne are like giant pieces of leggo.