The site includes a group of low hills crossed by the River Ebro and a reservoir. The vegetation is a mixture of Pinus woodland, scrub and grassland. Alluvial woodland occurs around parts of the reservoir. The main human activities are livestock-farming and fishing.
This is an important site for raptors and species characteristic of Mediterranean habitats.
BirdLife International (2019) Important Bird Areas factsheet: Valdurrios-Serreta Negra and Los Rincones mountain ranges. Downloaded from http://www.birdlife.org on 21/08/2019.