Yes, these are pictures of a nuclear bunker, this being the forthcoming Bogons data centre near Comrie. It is also where our fibre should meet that of the wider world and will, we hope, achieve economies of scale from aggregation with other users that will make our network ever cheaper to run: if we just bought our backhaul (the link between the glen and the wider internet) at about the same initial cost from a commercial provider, we’d still have to pay Openreach’s Excess Construction Costs to get the link from the Strathyre Exchange to the entrance to the glen, but we’d never thereafter gain any benefit from others using the wider link. With the bunker, the idea is that we start at par and then go down in cost from there.