Trout from the Gállego River Food and drink · Caldearenas, Alto Gállego, Huesca Image of Caldearenas, not of the place itself. The trout of the upper stretches of the Gállego and of its ravines is a traditional dish of the comarca: it is prepared marinated or passed through the frying pan with a piece of bacon or ham inside the belly. Photo: Pompilos (CC BY-SA 4.0) What to see and do in Caldearenas