PILLOW LAVAS

Discover a wall of volcanic rocks with a shape of almohadas in the bottom of the sea 100 million years ago. A unique natural wonder in the Flysch of Bizkaia!

BARRIKA FOLDS

Discover a unique natural wonder in Bizkaia: pliegues de distintos types on the shores of Barrika, from Meñakotz to Muriola.

BLACK FLYSCH

From the alternation of the bottom layers and the vertical walls of the cliffs you can see small mareal widths to the east and west of the port of Armintza....

PALEORRASA SOPELA

Meet the spectacular paleorrass off the coast of Uribe. It's an ancient seabed that forms cliffs more than 20 feet high over 7 kilometers. Don't miss the opp...

CASTLE COURT

Billao's coastal dynamics can be seen by walking through the area, with inclined strata, difficult-to-reach cliffs, and the formation of Billao Island. Fossi...

FOSSIL DUNES

Astondo dunes are a rare cement formation, fossil remains over 6,000 years old have been found. They sedimented according to the wind.

GEOSET OF BILLANO CAPE

Billao Lurmuturreko Multzoa offers a dynamic coastal experience with inclined layers, difficult-to-reach cliffs, and sandy beaches. Fossilized dinosaur footp...

BARRIKA SANDS

Sands of Barrika is a site with impressive climate changes and an archaeological interest, including the Kurtzioko silex workshop.

MUGA K-T LIMIT

Meet a unique place in the Bizkaia Flysch where you can see the boundary between two geological ages and learn more about the disappearance of species like d...

Basaltic fruiz quarries

CLAYS AND OPHITES

On the beach of Bakio, to the east, you can see a cluster of rocks, especially red and green clay, with veins full of plaster.