The tunnels carved into the rock along the route of the Val de Zafán Greenway, in the Baix Ebre section between Tortosa and Benifallet, are a fascinating part of the region’s railway history. These tunnels were built in the late 19th century, specifically between 1880 and 1885, as part of a project aimed at providing an outlet for Aragonese goods to reach the Mediterranean Sea.

In terms of technical features, the tunnels vary in length and are carved directly into the rock, giving them a striking and natural appearance. They also have a simple design, with exposed rock walls and arched ceilings, which create a unique atmosphere and a special charm for visitors traveling along the Greenway today.

Today, these tunnels are a popular tourist attraction and form part of a route that offers the opportunity to enjoy both the natural beauty of the landscape and the industrial history of the area.