spigot wrote:My name's spigot and I do drains and occasionally other cavities.
I've done a few dozen so far, all around Melbourne.
I thought I'd check out UEGA as I find the whole psychological aspect of exploration, its history and where it's going, to be pretty fascinating.
Looking forward to bumping into some of you on my travels.
Mmmm, drain and tunnel history.
This may interest you, from the late 1890's:



Construction of "Hawthorn Main Drain", fairly well known as "Maze",
Heaps more good archivy history goodness available on Trove.