The strategic location of the The Sierra and Cañones of Guara Natural Park, between the steppes of the Ebro and the Pyrenees, a crossroad between the Atlantic climate and the Mediterranean one, leads to a profound difference between the vegetation of the North and South slopes, and the birth of numerous exclusive species of this mountain massif. On the southern slope is the Mediterranean forest par excellence, the holm oak wood, the predominant, next to the wild pine at the higher elevations. In the north slope the quejigar occupies big extensions, following, in height, by the wild pine groves of pine and forests of beeches. At the summits of the Sierra of Guara, the characteristic vegetation consists of species grasses, there where the rocky places allow to their establishment, appearing flowers of singular beauty like the speedwells or granny’s Bonnet.
The peculiar climatic conditions on the limestone rock and the conglomerates have developed a complex system karstico, characterised by the appearance of formations such as caves, gallery, tips, and springs, and impressive vertical walls and Mallos. The above mentioned complex is closely linked to the movement of water, gorges and ravines.
The altitude of the Park ranges from 430 meters, at the exit of the river Alcanadre, up to 2.077 meters of the summit of Tozal del Guara. Besides Natural Park, the Sierra of Guara has other figures of protection, such as the one which is designated ZEPA, Special Birds Protection Area, and site of Community Importance (SCI), referred to in the European regulations and integrated into the Natural Network of Aragon.