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turismosobrarbe.comComarca de Sobrarbe


UNESCO Global Geopark Sobrarbe-Prineos

Roadside Geology Route



Concealed in its rocks, the District of Sobrarbe jealously guards numerous stories about its past: bygone worlds inhabited by strange and impressive creatures; huge eruptions of energy that shattered rocks and folded them like paper; geological races between rivers and glaciers that gave rise to the beauty of the landscape around us; deep underwater gorges transformed today into highpoints; seas, rivers, lakes and glaciers now gone forever; and tiny animals petrified to hard rock.

To tell these stories, the Geopark has erected explanatory panels in 13 sites of special interest. These panels describe the geological peculiarities of the location and will help you to look at the landscape of Sobrarbe with new eyes, understand its origins, learn about its history, discover the signs of its distant past and to picture the mark left by humankind on a land whose recent history has run parallel with that of its occupants.


Numerous outcrops in the area are famous among geologists throughout the world, such as the deep marine sediments of the Eocene and the tectonics of the alpine orogeny.

Hundreds of geologists, both students and teachers, from different countries, visit us every year to learn about the geological heritage of Sobrarbe and re-evaluate it with their research.
The most important features of the geology of Sobrarbe are:

- A record of the history of the Earth since more than 500 million years ago.
- First category examples in the different disciplines of geology: stratigraphy, sedimentology, tectonics, petrology, paleontology, etc, facilitating pedagogical work.
- A variety of sedimentary environments ranging from deep marine (abyssal) to continental (river, lacustrine) passing through transitional environments (deltas).

Roadside GEOlogy Route

1 Landscapes of yesterday, landscapes of today . Eripol . At the top of a hill, near the village
2 A turbulent history, Boltaña Castle
3 An ocean of rocks. Guaso. Tozal de Guaso viewpoint
4 Fossils and coins. Jánovas. Promontory going to the Ara river, opposite the village
5 A geological race. Broto. On the way to Sorrosal Cascade
6 The legacy of ice. Linás de Broto. Near the church. Opposite the trough.
7 The language of rocks. Morillo de Tou. On the path which goes to the dam.
8 Castles on vantage points. Morillo de Tou. Viewpoint
9 Braided rivers. Path called La Serreta in Aínsa.
10 A world in ruins. Laspuña. Rest area on the road from Laspuña to El Pueyo de Araguás
11 The origins of Peña Montañesa. Road from Escalona to Buerba
12 Geology and landscape. Bestué. Square in Bestué
13 A red and blue planet. Plan. Next to the Tourist Office