Agricultural landscape of Almunia de San Juan Nature · Almunia de San Juan, Cinca Medio, Huesca Almunia de San Juan, in the northeast of the Cinca Medio, is irrigated by the Cinca, its tributary the Sosa, and the Canal de Aragón y Cataluña. The monumental siphon of the Sosa, which allows the canal to cross this river's valley, was inaugurated on 2 March 1906 in the presence of Alfonso XIII, and gave rise to the first legally established irrigation community in the canal's area. Photo: José Demaría López (Public domain) What to see and do in Almunia de San Juan