Geology

Cadolles

Cadolles are among the most curious and unique geological formations to be found in the area around the River Segre Nature Trail and the Utxesa Reservoir. These are natural depressions or potholes carved out of the rock by the continuous action of rainwater and other erosive processes over thousands of years. The phenomenon has resulted in a stony surface dotted with cavities of varying sizes and depths, some of which are capable of retaining water for long periods.

It is a vast, almost horizontal rocky platform that rises slightly above the surrounding landscape. Numerous rounded and oval-shaped basins, with smooth edges and a polished appearance, stand out on its surface, distributed irregularly across the whole area. Some contain small pools of water, while others appear dry, revealing the different shades of the eroded rock. Surrounding this outcrop is a mosaic of farmland, scrubland and scattered trees, reinforcing the sense of vastness and isolation of the place.

These formations are an excellent example of the transformative power of natural forces. Rainwater, as it pools in small irregular patterns in the ground, causes the dissolution and gradual weathering of the rock, slowly enlarging the cavities until they form the characteristic basins that can be seen today.

As well as being of geological interest, cadolles form part of the natural and cultural heritage of Torres de Segre. They are a rare feature in the landscape and help us to understand how the local terrain has evolved over time. The examples found here makes this a particularly attractive stop for those keen to see how nature, working slowly but steadily, is capable of sculpting true works of art out of stone.