More structural elements that change the shape of rooms; this time, it's alterations of the floor. And no, just because I'm doing side views of these and the next set doesn't necessarily mean I'm going to do sidemorphs like Dyson Logos and others are doing.
Columns: The room has columns along one or more edges. Columns that reach to the ceiling help support it, allowing the room to be larger than usual. Columns can also be used to support a balcony. which acts much like a Ledge, but people or objects can occupy the space under the balcony.
Depression or Well: The floor is lower than normal, either because it has a large indentation or a small, deep hole. There can be one or several, as desired. The image show both a depression and a well in the center, but normally you would pick one. The location that the die lands in gives you the first letter of any substance in the bottom of the depression/well, if desired.
Tiers or Terraces: Steps or a raised platform. If this is a platform, it could be a dais for a throne or display pedestal, or it could be a precaution in a room that occasionally floods, or it may be just a decorative feature. If this is an actual set of steps, it may be to allow access to a switch high on a wall, or perhaps you can jump from the top to reach a ladder.
Obstacles: This may be an incomplete wall, a movable screen, or many other possibilities. It usually don't completely cut a room into two; instead, an obstacle either blocks the view until someone has gone completely around it, or it slows movement, requiring people to climb over it. An exception would be a barred gate, such as a jail cell, or another "wall" that blocks movement without obstructing observation or communication.
Lumpy Floor: One or more sections of the floor rise up higher than the rest. It may be difficult to walk on, either because it is jagged and broken, covered with ooze, or just a bit steep. It isn't tall enough to count as a full Obstacle, however, since it rarely blocks the view. It may rise high enough to create a narrow passage, forcing people to stoop to avoid the ceiling.
Sloped Floor: The floor slants upwards to a different height. This may make it difficult to stand on or possibly even require effort to climb. It may also be a sign that something at the top of the slope is meant to roll down it; this may be as inoccuous as drainage from a higher section of dungeon, or it may be a diabolical trap.