Salt of Peralta de la Sal Food and drink · Peralta de Calasanz, La Litera, Huesca The salt springs of the ravine feed salt pans of stepped basins, declared a Bien de Interés Cultural, where the water evaporates in the sun; their salt supplied the comarca's pig slaughters for centuries. Photo: Diego Delso (CC BY-SA 4.0) What to see and do in Peralta de Calasanz