Costa de Dexo

Costa de Dexo is a stretch of coastline in the municipality of Oleiros, in the province of A Coruña, Galicia, running between the Mera lighthouses and the port of Lorbé. This roughly eleven-kilometre cliff-lined shore was declared a natural monument in 2000 in recognition of its distinctive geomorphology, landscape and habitat diversity. The area is also part of the Natura 2000 network as a Special Area of Conservation (SAC), underlining its importance for preserving coastal ecosystems in northwestern Spain.

Where is Costa de Dexo located?

The coastline lies entirely within the municipality of Oleiros, in the northwestern part of the province of A Coruña, between the Ares-Betanzos and A Coruña estuaries (rías), deep within the Gulf of Ártabro. Sitting at the junction of two estuarine systems, the area owes much of its varied terrain and range of microhabitats to this particular geographic position.

What does the landscape look like?

The natural monument covers around 270 hectares, with elevation ranging from sea level up to 81 metres. The shoreline is shaped like a jagged saw blade, alternating between coves, rocky outcrops and small beaches such as Canabal and Portiño de Dexo. This rugged profile results from long-term erosion of the granite cliffs by the Atlantic Ocean, which has carved out distinctive rock formations and numerous indentations along the coast.

What can visitors do at Costa de Dexo?

The area is set up for walking and nature tourism, with coastal paths connecting viewpoints, the Mera lighthouses and smaller beaches along the way. The former lighthouse keeper's house has been converted into a sea-themed educational workshop, the Aula del Mar, where visitors can learn about the local ecosystems and plan their own route through the area. It suits both those looking for a quiet walk with Atlantic views and visitors interested in environmental education.

Why is this coastline protected?

The natural monument designation, granted in 2000, reflects the uniqueness of the ecosystems and habitats found along the Dexo-Serantes coast, together with its landscape and geomorphological value. Its additional recognition within the Natura 2000 network as a Special Area of Conservation highlights the site's importance for biodiversity conservation at a European level, covering both the cliff habitats and the adjacent coastal waters that support local flora and marine fauna.

Frequently asked questions

Where exactly is Costa de Dexo? In the municipality of Oleiros, province of A Coruña, Galicia, between the Mera lighthouses and the port of Lorbé, on the shore of the Gulf of Ártabro.

How large is the protected area? The natural monument covers about 270 hectares, with terrain rising from sea level to 81 metres.

Since when has it been protected? It was declared a natural monument in 2000 and is also part of the Natura 2000 network as a Special Area of Conservation.

Is there any visitor infrastructure? Yes — the former lighthouse keeper's house near Mera now houses an educational centre, the Aula del Mar, and coastal paths lead to beaches such as Canabal and Portiño de Dexo.