Kortezubi encuantra at the entry of laughs at Guernica and at the Nature reserve of Urdaibai.

To visit we have on the one hand have Santimamiñe and for other forest animated by Ibarrola in Oma.

The Santimamiñe caves find to 150 m of altitude in hillside of the Ereñozar. Approximately 60 steps have to be raised for to come to the chapel of san Mamés, who keeps stones with engravings solar, and then approximately 245 for the caves. They were discovered in 1916 by chance for a few children of the area. They lodge in his interior rock paintings of bisons, arrows, horses, bears and deer, undecipherable geometric forms, realized with ink black, belong to the epoch magdaleniense.

Also it is necessary to see the "fried egg", curious rocky form that appears in the cave. Santimamiñe is the prehistoric poblamiento more important of Biscay.

Forest of Oma:

In one of the hillsides, covered by a forest of pines, the painter and sculptor Agustín Ibarrola conceived the animated Forest or Forest of Oma, painting in the trunks of the trees human, animal figures and geometric that there provide with magic inhabitants to the forest, some of which only become visible from certain positions, in that the images of different trunks form an image joint. (fte. to see links)

Nuclei: Kortezubi, Elorriaga-Santa Ann, Basondo, Oma