The Challenge:
The tunnel was again littered with trash, so we partnered with local youth and cleanup crews to remove it, assigning safe areas where the children could help.

The goal was to make the space safe and clean again.

What We Did: We cleaned the site inspecting the area first. We then monitored the site frequently over the following days and weeks to understand littering patterns—how fast it became dirty, what trash appeared first, and when and why littering occurred.

Location: Berlin
Site: Tunnel under Friedrichstraße S-Bahn
Year: 03/2025