Festivities of Yebra de Basa Activity · Yebra de Basa, Alto Gállego, Huesca Image of Yebra de Basa, not of the place itself. Festivities of Yebra de Basa on 10 August in honour of San Lorenzo, patron of the 16th-century Gothic parish church. On 25 June the pilgrimage of Santa Orosia is also held, with the village's dancers and a pastorada recited in Aragonese. Photo: Wikipedia / Wikimedia Commons (CC BY-SA) What to see and do in Yebra de Basa