So I'm really new to this game, so please bear with me. I got this message:
Digging designation canceled so I went on the wiki and discovered this information: The safest thing to do is back off several tiles, mine up a z-level then approach the location again.
And that's what I wanted to do but how can I mine-up a z-level without doing it from outside? Because I tried to build and upward stair with no luck so far. What am I doing wrong? On the wiki it's said: Up stairs need to be built below down stairs. Up/down stairs function as both up and down stairs at once.
So I know they have to be build below down stairs but can I build the up stairs first and then the down stairs.
If not how can I travel between Z-Level and the level above without going outside and mine a new entrance?