Rocks, although somewhat inert, attract me especially because of their abstract and imaginative possibilities. I find it fascinating to lose myself in its particular universe of infinite landscapes. Most of the terrain of the Mount Jaizkibel they belong to Paleocene-Eocene of the Tertiary Era, with a lithology of flyschoid character, with sandstones, conglomerates, silts and argilites. Mount Jaizkibel presents a great variety of structures of great interest geological, but at the same time, of great beauty and spectacular. The conjunction between internal laminations, color alterations, and erosion forms generates truly artistic mosaics.