Festivities of invierno de Caldearenas (San Antón) Activity · Caldearenas, Alto Gállego, Huesca Image of Caldearenas, not of the place itself. Festival of San Antón, on 17 January, in Caldearenas, a place that arose around 1900 around the Canfranc railway station and the seat of the municipality that grouped together Aquilué, Estallo, Serué, Latre and Javierrelatre. Photo: Pompilos (CC BY-SA 4.0) What to see and do in Caldearenas