A fitting finish to the series as we pass through the final subterranean frontier out into the clear light of the South Yorkshire day.
Each one is a neglected gem of municipal modernism, the underpass a feature under threat, the pedestrian often subsumed by the drive to accommodate the motor car.
As of last Wednesday, we all seem to have tenuously hung on in there.
Oh we’ll hear the thunder roar, feel the lightning strike.
At a point we’ll both decide to meet at the same time tonight.