The Burgui Gorge is a limestone canyon dug out by the incessant activity of the Esca river, which used to carry rafts transporting wood from the Pyrenees to the calmest parts of the Ebro.
This Nature Reserve is home to a large colony of griffon vultures, as well as other types of birds such as the eagle, the bearded vulture and Egyptian vulture. The flora and fauna can be observed from a viewpoint reached by a small path that crosses the gorge. In addition, there is another path to the Basari fir grove, another scenic treasure to visit.
Access: The trail begins in Burgui, which can be reached by the N137 road.