Salt Production and the Geoheritage of the Huesca Province (Spain): Context, History, and Potential as an Educational Resource

Salt harvesting through natural solar evaporation of salt brines is a practice notably abundant in the Iberian Peninsula. Such activity has been relevant for human consumption, food preservation, livestock feed, and various industries throughout history. The objective of this research is to analyze the productive history and conservation state of the salt evaporation ponds located in Naval and Peralta de la Sal (Huesca, Spain), as well as their didactic potential. These saltworks are associated with clay and gypsum levels from the Upper Triassic (Keuper). The earliest written records of salt production in the area date back to the 10th century, but they were exploited as early as the Bronze Age. Remains of most of the ponds and some buildings are still preserved and are easily accessed, which makes them very interesting from an educational perspective. Both on-site and off-site activities can be carried out to analyze their historical and current significance through modeling and argumentation practices. This can lead to a better understanding of how geology relates to everyday life and facilitate the development of positive attitudes among students towards geoheritage while raising awareness about its preservation and preventing its degradation.