Ironanvil update
So I started digging 3-wide down ramps from the Military Ward area.
At first, I dig a 3x3 room, then smooth the walls, and then channel down the last 2x3 and leaving the 1x3 up-ramp.
Then repeat until the caverns.
I was using farm-radar in the initial planning, but succumb to using dfhack reveal to have a clearer picture on where cavern 1 will be.
My planned pump stack & stairs will hit water, so I need to plan a way to obsidianize those water.
Then I have this side-plan, "The Shists Tower"
Make a 5z tower to overlook cavern 1 near the pump stack pillar.
There is 3z worth of natural cavern with some water. But I wanted to add 2z height.
So I channel from the top stone layers of cavern 1, and about 22-tile radius around The Shists Tower.
Most of the jagged stone shists pillars are reduced down to the "cavern floor" z-level.
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I had to halt The Shists Tower project when a Giant Cave Spider shows up in the map.
I used an easy lock using hatch from above. A few cage traps later, and I captured the GCS for another side project.
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A siege of 16 goblins came, and as I await the squads by the iron gates (that has never been closed). A spear dwarf casually hangs outside, goes into a martial trans, kills a goblin recruit while being pin cushioned by iron bolts and arrows. The speardwarf died despite giving the order to charged. Our population is down to 98 from 100.