A distinct stairway through the terrain which helps to climb very steep slopes or to cross over impassable objects. A stairway going through rock passages or between impassable objects may be drawn without border lines.
An easily runnable stairway or indistinct stairway should be drawn as a footpath. Steps of a stairway shall be represented in a generalized manner.
Minimum length: 3 (graphical) steps.
Minimum width: 0.4 mm (IM).