The left tunnel goes to the opposite side of the car elevator seen on the right. There was a time when Fords were shipped by barge on the Mississippi. This freight elevator brought them from the assembly floor to river level. A separate elevator was for moving men and silica up and down.
The only way to get to the second floor–since demolition crews punched-out the staircases and ladders leading upwards–was to climb this elevator shaft. In the lower-left corner is a blower for the foundry furnaces.
An ajar car elevator car afar, technically.
The bottom of the elevator in the new foundry.
This is what it might have looked like if a new Ford descended in the elevator with its headlights on. As seen from the Mississippi side–the opposite portal faces the sand mine.