After looking at Google Maps History where there are images without foliage completely blocking that area, I found that it really isn't a boneyard. It looks like a building of some sorts, probably like an office for WCUSA executives. There are also cars visible in that area, so an office of some sorts seems a lot more plausible than a boneyard. However, there might be some sort of storage there too, but I don't really think it's a boneyard.