Nestled beneath Stockholm’s bustling Slussen area lies a hidden marvel: the Fish Tunnel. This innovative passage, completed in mid-2024, reconnects Lake Mälaren to the Baltic Sea, allowing fish to migrate freely for the first time in nearly 400 years.
Designed to support weaker-swimming species like eel, roach, and perch, the tunnel mimics natural river conditions with carefully placed stones and illuminated pathways. A state-of-the-art monitoring system, including cameras, offers a glimpse into the underwater journey, sometimes capturing unexpected visitors like otters.
For locals and explorers seeking the unseen facets of their city, the Fish Tunnel exemplifies Stockholm’s commitment to urban ecology and innovation. Next time you’re near Slussen, take a moment to appreciate this aquatic thoroughfare flowing beneath your feet.
