Today's geomorph is a bit an experiment. My intent was to create an self-contained arena with subterraean cells, an elevator that raises fighters up to the main level, a viewing area for privileged dungeon denizens. Looking at the image, I'm not sure it is clearly depicted. It remains to be seen if it I keep it in the Monkey Mapper, or if I put it on the back-bench for ideas that I revise later.
As a bonus, I'm including a more traditional geomorph that includes a stair to the surface (or an upper level), as well as a secret tunnel that connects the northern and southern areas.