The highest massif in the Basque Country is to be found in this reserve. This natural vantage point, with peaks over 1,500m above sea level has slopes facing both the Cantabrian and Mediterranean Sea.
Tunnel of San Adrian, channelled out by underground rivers.
The diverse appearance of the Aizkorri-Aratz landscape is noteworthy. Carbonated rock formation has sculpted many different forms, from undulating rocky outcrops and rounded crests to sheer descents into deep gullies and depressions. The depression of Urbia is 1 km wide and extends for 4 km. It is surrounded by rocky peaks. Travellers, traders, pilgrims and even kings once passed through the renowned tunnel of San Adrian, an impressive 50m-long passageway channelled out by underground rivers.
In these varied surroundings there is a wealth of fauna, especially mountain species. The booted eagle, the Egyptian and other vultures, the goshawk and other smaller birds, such as the chough and the mountain greenfinch all inhabit this area. As for mammals, there are snow cats, martens, dormice and wild boar.
The climb up to the Aizkorri summit is highly recommended. Although it is fairly long and steep, the effort is rewarded by the interest of further attractions to be discovered along the way: the San Adrian tunnel and pathway (part of the Pilgrims´ Way to Santiago), the Urbia pastures and Zorrotzarri menhir.
Aralar
Aizkorri-Aratz
Active tourism