Ladders are non-moveable items that can be used to go up a floor or down a floor. To go up a floor, "use" the area at the base of the ladder (where the ladder meets the ground). To go down, simply walk on to ladder's hole. Most ladders look like this:
Ladder (Wood) Ladder (Bamboo) Rope-Ladder

Though they are rare there are trap door ladders, that you may only go down (Like some holes in the maze of lost souls), but not up, even by using a rope. You can tell these ladders from regular ones, because the ladder on the trap door ladder looks "sawed off" and you see only a small (unusable) ladder segment.

Go Forward Icon

See also:

Ladders, Stacking, and Elevation
Community content is available under CC-BY-SA unless otherwise noted.