Day 528:
It turns out that way back when, whenever it was that I last worked my way east at the upper levels, I left a bunch of chambers half-dug and half-developed and thus off my map.
(I refuse to map something that doesn’t have solid borders yet because that way lies madness and many map updates and it’s not like I’ve got a computer here, this is all being done in charcoal and the occasional squid ink.)
So I’m both further ahead than I thought and further behind because the places that I need to connect together so that I can run my new rail system are not connected, but the places below them are connected, so there’s hope.
That was a long way to say I’ve already made more progress than I thought and also I’m tired and my back hurts from hauling rock all day.