is you can still do it. it is actually cheaper, faster, far greener still to just simply put stone buildings up. so we found here that we save 92% of the embodied carbon had this been a steel framed building or clad in stone. so very simplyjust cut the stone out of the body, transport and erect on site and that is it. so, essentially, you have created a very high tech building that has the appearance of a ruin. i guess so, yes. and inside, its equally natural. so this is your flat we re coming into? exactly, yeah. yes, straight in. that is some view! got st paul s out there and we can see the stone. that is right. that is our limestone exos keleton. so the outside is all stone, inside, all european oak, timber. is that to make it carbon neutral, carbon negative?