There were several elaborately drawn ships and a lot of writing on the walls in this one room in the fort's dungeon. A sign nearby explained that prisoners awaiting execution were held in this tiny room with only a small hole in the ceiling for ventilation. One of the prisoners must have been responsible for these drawings.
I don't know if it was the creepy story, the drawings, or the tiny, stuffy little room we were in, but we all got out of there pretty quick!