The head of a bison with a corniform motif stands out among other strokes of difficult interpretation.
Jesús ALTUNA, Koro MARIEZKURRENA 2010, 'Rupestral painting in the superior gallery of Altxerri cave (Aia, Gipuzkoa)', Zephyrushttp://revistas.usal.es/index.php/0514-7336/article/view/7172. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)