Glass, a death trap... yeah.
Um, for those who don't read topic posts, let me sum it up so we don't waste our time.
1) SHORT TERM, 1ST COUPLE SEASONS, 7 DWARFS.
2) WITHOUT BUILDING UP TOO MUCH. MINING > MASONRY.
3) I HAVE LONG TERM PLANS.
But thanks for the effort, tho.
db - a channel and drawbridge may be the way, esp since I'm close to the open pipe with a half-dozen imps and a magma man. (Can they cross a simple, unimproved brook? I'm sure they can "fire" across it.)
So, essentially you have a series of firing balconies that perforate anything working it's way down your entry ramps? Cool idea. Like an indoor shooting gallery.
I dug in where the sand meets the rock, so I've got my higher-value rooms (dining hall) in stone and the rest carved cheap and quick out of sand. Down 1 is, indeed, the flux layer, so that's higher value too - but I'll be migrating the whole thing closer to the magma pipe as I go, where my magma-works will be. Not sure how much "foundation" work I want to put in at this exact location, but that concept might be adaptable to work over there.
(I like to get a functional base level while I do some exploratory mining, nail my first season of trading, and then, essentially, start again in my preferred location with 2 Legendary miners plus slop. For me it works better than scrambling to fit it all into stone with proficient miners.)
(If an archer fires up a level at a target, does that count as the arrow "falling" a z-level to recover it?)