Bardenas Canal and the colonization villages Historical milestone · Ejea de los Caballeros, Cinco Villas, Zaragoza Image of Ejea de los Caballeros, not of the place itself. The Yesa reservoir and the Bardenas canal, inaugurated in 1959, transformed the dry farmland of the Cinco Villas into irrigated land. The National Institute of Colonisation raised six new villages in the municipal district of Ejea, among them Valareña, Pinsoro and El Bayo. 1959 Photo: Zarateman (CC0) What to see and do in Ejea de los Caballeros