This guide covers the central part of the Spanish Pyrenees plus the dry, desert-like Ebro basin beneath it. It covers the northern part of Aragón, roughly coinciding with the province of Huesca. This guide covers the famous Pyrenean regions of Ordesa and Monte Perdido National Park, Aneto and Benasque, Jaca and the Hecho Valley. Further south, it covers the Sierra de Guara, the Somontano and Los Monegros (including Belchite) and the Laguna de Gallocanta.
- Landscape history
- Flora and Fauna
- Where to watch birds
- Finding orchids and other wildflowers
- 21 detailed routes with observation tips and 25 extra site descriptions
The 2016 revision is minor: one small new site was added and one issue in a single point on a route was changed. Furthermore, a few textual things were changed.