The northern part of Guara constitutes the southern limits of an area rich in animal and plant species such beech and fir trees and Pyrenean newts. 

A gentle mountain range that runs from NE-SE, known locally as the viewpoint of Barbastro. It is made up of layers of sandstone, gypsum and loam and is home to vegetation that thrives in saline soil and/or gypsum-based ground. Also an important area for birds from the lower plains.