The Aragonese Sistema Ibérico is divided between the provinces of Zaragoza and Teruel. It is a set of hills without a clear structural unit, which can be divided into two zones: Sistema Ibérico del Jalón and Sistema Ibérico turolense. In the first, the Moncayo stands out with 2,314 m, formed by Paleozoic quartzites and slates, partly covered by Mesozoic limestones; to the southeast of the Moncayo the Sistema Ibérico descends of height. The second is formed by elevated terrain (from 1,000 to 2,000 m in general), but flattened and massive. To the southwest of the depression the summits of the Sierra de Albarracín range are reached above 1,800 m, southeast the 2,000 m are reached in the Sierra de Javalambre range and finally we arrive at the Sierra de Gúdar range (2,024 m) transition to Maestrazgo.