It is always good to give your ceilings some support before they collapse.
In this set you can find 4 different types of columns (broken, greek style, elegant, cyberpunk style) and a wooden pillar. Each column is dividable into pieces, 1" of height each. So you can build them up in 1" steps, depending on the height of your dungeon walls.
printing suggestion: 2mm or 1mm / 15% infill / no supports