Aura of Life in Motion

Some plants with an “Aura” near the tracks of Hasselbrook S-Bahn station.

Stumbled upon this some time in autumn of last year when waiting for the train. At first I couldn’t figure out what made this strange auras appear on the wall behind the small plants, but an arriving train showed clearly how it happens: The sudden movement of air caused by passing trains makes the plants swing back and forth, which keeps the dirt and grime normally staining the concrete wall from settling in the places touched by the plants.