Auts (Catalan pronunciation: [ˈawts]) is a small mountain range west of the Ebro river in the Bajo Aragón-Caspe/Baix Aragó-Casp comarca, Aragon, Spain. It is located about 9 km north of Fayón (Faió), close to the road between Maella and Mequinenza (Mequinensa).The ridge's highest point is Alt dels Auts (Spanish: Alto de los Auts), a 434 m high summit.The Auts are desolate-looking limestone mountains, smooth, with low and scruffy vegetation and numerous denuded patches.