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On the GEOLAG blog, we share popular geology articles to help you interpret the landscape, understand natural heritage, and discover the history of the Earth written in rocks, fossils, mountains, coasts, and caves.

A space to explore geotourism, geological routes, environmental education, and Earth Sciences from a rigorous, approachable, and accessible perspective.

Blog topics

  • Geology and landscape.
  • Geological routes and geotourism.
  • Fossils, minerals, and rocks.
  • Natural and geological heritage.
  • Asturias, Cantabria, and the Cantabrian Mountains.
  • Environmental education and Earth Sciences.

Eastern coast of Asturias

Explore the eastern coast of Asturias: a paradise of blowholes and flat-topped ridges between Ribadesella, Llanes and Ribadedeva. Discover its karst magic and prehistoric traces. The east will captivate you!

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Western Coast of Asturias

Discover the Western Coast of Asturias: a paradise of rasas and 100 beaches between the Nalón river and Galicia. Explore the geological history of these imposing cliffs. You will be fascinated by this corner!

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The Asturian coast: its beaches and cliffs

The Asturian coast is a living landscape where beaches, cliffs, dunes, estuaries, and coastal platforms (rasas) tell the geological history of the northern Iberian Peninsula. Along its more than 350 km of coastline, between the Tinamayor and Eo estuaries, the variety of rocks and structures dictates the shape of the coast: from the cliffs and pebble beaches of the west to the limestone landscapes of the east, including the large sandy areas and dune systems fed by rivers. An educational journey to understand how the sea, rocks, sediments, and time have modeled one of the most diverse coastlines of the Cantabrian Sea.

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Cabo Peñas Route

The coastal strip of Cabo Peñas offers incredible conditions for identifying the geological features of central Asturias; in addition to the scenery, a wide variety of rocks, fossils, and typical Asturian landscapes can be recognized.

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Somiedo Natural Park

Somiedo was the first area in Asturias to be declared a Natural Park in 1988 and, in 2000, it was also included in the Natura 2000 Network as a Biosphere Reserve.

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Geological walk through the Covadonga Lakes

The route through the Covadonga Lakes allows you to discover one of the most emblematic landscapes of the Picos de Europa National Park, combining nature, history, glacial geology, and cultural heritage. From the Pedro Pidal Interpretation Center to the old Buferrera mines, Lake Ercina, Vega del Bricial, and Lake Enol, the route shows how glaciers, moraines, karst, and mining activity have shaped this unique environment. An easy family excursion to understand the origin of the lakes, the power of ice, and the close relationship between the mountains, shepherds, and the memory of Covadonga.

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The Samuel Route and the Bufones de Pría

The Samuel Path PR-AS-284 is a low-difficulty circular route that combines nature, geology, and local history between Llames de Pría, Cuerres, and Ribadesella. Along the Guadamía River, the path reveals a peaceful landscape of fertile plains, limestone formations, small waterfalls, and unique spots such as the medieval Mía bridge, with the option to extend the walk to the impressive Bufones de Pría.

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Puente del Arcu de Torre (Ribadesella)

Very close to Vega beach, in the town of Torre, lies the Puente del Arcu, a unique natural formation created by the erosion of the Acebo River on Carboniferous limestones. A short walk through the forest leads to this rock arch, an ancient section of a fluvial cave where subterranean features, such as stalactites and flag formations, are still preserved. Beneath the arch, the ruins of an old flour mill add human history to a geological spot as beautiful as it is unexpected.

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