Melbourne’s underground transport network is a creeping network. For those of us above-ground, we take little notice that, when standing in the CBD, there is so much going on beneath the surface. Because we give nary a second thought to the network underfoot, equally forgivable is the fact that most of us probably don’t know the half of what is involved with tunnelling itself.
So, is there more to making a tunnel than burrowing? You betcha there is!