De Atlas Etnográfico de Vasconia
[/atlas/ganaderia/Subida-al-monte-Aia-1998.jpg|Climb to the mountain. Aia (G), 1998. Source: Antxon Aguirre, Etniker Euskalerria Groups.|At the end of the Middle Ages, flocks in the Basque valleys converged on the same mountains that are now the main summer grassland used for grazing.||]
