Construcción del embalse de Urkulu Historical milestone · Aretxabaleta, Debagoiena / Alto Deba, Gipuzkoa Image of Aretxabaleta, not of the place itself. The Urkulu reservoir, in the municipal term of Aretxabaleta, was built in 1979. 1979 Photo: Marisol Murua (CC BY-SA 3.0) What to see and do in Aretxabaleta