Dwarf Fortress Build Ramp / Stairwell Down After Having Removed Slope

dwarf-fortress

I tried to build an uncrossable pit and removed all the slopes going up out of it. But now I need to cross that uncrossable pit. Is there a way to build a path down from above?

Here's the top layer:

Top layer

And the layer below it:

Layer below

Best Answer

Using the build construction menu (b > C), you can build ramps and stairs. You can build a down stair on the level where your dwarves can access, build up/down stairs below each other until you reach the bottom, then an up stair at the floor.

Simple diagram viewed from the side:

---    D_P__    -- P = Your dwarves
   |   X|       -- D = Down stairs (b > C > j)
   |   X|       -- X = Up/Down Stair (b > C > i)
   |___U|       -- U = Up Stair (b > C > u)