The real Bag End didn't have a huge oak tree above it like Tolkien described, which was about the only shortcoming of this place as a site for Hobbiton, so Peter Jackson got around that by purchasing a large, living oak tree from a neighbouring farm, meticulously cutting it up and labeling it, so that it could be put back together with screws and nails at its new temporary home above Bag End ... these are pieces of the lumber from that oak tree