Foz de Lumbier

Foz de Lumbier is a canyon in the Pre-Pyrenees that stretches over one kilometer through limestone walls rising between 150 and 400 meters above the Irati River. The river runs through the bottom of the gorge, creating a narrow waterway flanked by towering rock formations on both sides.

A railway line operated through the canyon from 1906 to 1955, connecting Pamplona to Sangüesa. The engineers carved a 200-meter tunnel into the rock for the tracks, which remained after the service ended.

The gorge serves as a refuge for griffon vultures and other birds that make their homes in the rock walls and shape how visitors experience the landscape. These birds are a natural part of what you see when you look up while walking through the canyon.

A marked trail runs 6 kilometers from the parking area through the canyon with informational panels along the way about local wildlife and geology. The path is straightforward and remains fairly level, making it manageable for most visitors of varying fitness levels.

Two former railway tunnels have been transformed into walkways, allowing visitors to pass directly through the mountain inside the rock itself. This unusual route gives an intimate perspective of the rock formations from within the canyon walls.