How to dig up, through a level surface?

Question

I can dig out staircases upwards, but how do I actually cross the surface?

____
#X##
#X##       _ is the ground surface
#X         X are staircases
####       # is earth

Asked by Anna

Answer

Carve a ramp, they go upwards. You can then build a downward staircase and replace the ramp with an upward staircase. The ramp may become unusable after constructing the upper staircase, so send that fish dissector if the area is dangerous or you are expecting delays.

Answered by kotekzot

Check more discussion of this question.

loading..