Final answer:
The transept of the Old Minnehaha County Jail contained staircases, wooden shelves, a podium, and an altar.
Step-by-step explanation:
The transept of the Old Minnehaha County Jail contained several features. The northwest and east corner chambers housed staircases, with one staircase unfinished at the north end. The middle chambers had wooden shelves in the walls, possibly indicating the presence of solid doors. At the north end of the central hall, there was a podium accessible by a small staircase and an altar with a fire-stained surface.