An eroded range of hills dominated by sclerophyllous scrub and dry grassland, with Juniperus and Pinus forest. The main human activity is livestock-farming.
This is an important site for breeding raptors.
BirdLife International (2020) Important Bird Areas factsheet: Alcubierre and Sigena mountain ranges. Downloaded from http://www.birdlife.org on 21/10/2020.