Réunion's lava tunnels: a journey to the heart of the volcano

Reunion, a volcanic island par excellence, hides a unique geological treasure beneath its surface: lava tunnels. These underground galleries, formed during the flow of the Piton de la Fournaise, offer a fascinating experience for nature and adventure lovers.

Lava tunnels are created when the surface of a lava flow cools rapidly, forming a solid crust, while the lava continues to flow underneath. Once the lava has drained away, what remains is a natural cavity, a tunnel. Some of these tunnels can stretch for several kilometers, forming a veritable underground labyrinth.

Today, it's possible to explore these tunnels with specialized guides. Armed with headlamps and the right equipment, visitors find themselves plunged into a dark and mysterious world. The rock formations inside the tunnels, with their astonishing colors and textures, bear witness to the power and beauty of volcanic forces.

A visit to La Réunion's lava tunnels is a unique opportunity to understand the island's volcanic activity while experiencing an unforgettable adventure at the very heart of the Piton de la Fournaise.