September 29, 2025

Tervuren+

Independent Tervuren news

How Tervuren Amphibian Tunnels Save Lives

Common European frogs at mating grounds

Amphibian tunnel protect frogs on their way to mating grounds.

Amphibian tunnels are a proven solution to habitat fragmentation that threatens biodiversity. The Vlaktedreef, a busy road linking Tervuren with Overijse through the Sonian Forest, long posed a deadly obstacle for frogs, toads, salamanders, and even hedgehogs during annual migrations.

In the 1990s, volunteers and local authorities replaced seasonal rescue efforts with a permanent network of tunnels, guiding walls, and wildlife grids. The Tervuren project soon became a European model for ecological connectivity.

During the webinar, experts will explain the origins of the Tervuren tunnels, how they were engineered, their effectiveness in protecting amphibians, and the challenges of long-term maintenance.

Participation costs a symbolic €1 to confirm involvement, with spots limited to 30 attendees. Registration is required, and participants will receive a link a few days before the event. Sign up by emailing naturazonien@hotmail.be or calling +32 471 770 712.

The session also previews the annual Day of the Sonian Forest, held the following Sunday. Natura Zoniën emphasizes that volunteer engagement and public support remain essential to preserving the Sonian Forest’s biodiversity.

Frequently Asked Questions About Amphibian Tunnels

What are amphibian tunnels?

Amphibian tunnels are small passages built under roads to allow frogs, toads, salamanders, and other small animals to safely migrate between habitats without being killed by traffic.

Where are the amphibian tunnels in Tervuren located?

The amphibian tunnels in Tervuren are located along the Vlaktedreef, a road that cuts through the Sonian Forest between Tervuren and Overijse.

Why are amphibian tunnels important for biodiversity?

Amphibian tunnels reduce road mortality during seasonal migrations, helping preserve local populations of frogs, toads, and salamanders. They also maintain ecological connectivity and support long-term biodiversity.

By Dafydd ab Iago | Published by Tervuren+ | Article and photos are licensed under the Attribution-ShareAlike 4.0 International licence.