San Adrian, Natural cave tunnel in Zegama, Spain
The San Adrian tunnel forms a natural passage through limestone rock, connecting the provinces of Gipuzkoa and Alava across the Aizkorri mountain range.
From the Bronze Age through medieval times, this tunnel served as a vital commercial and pilgrimage route between the Spanish plateau and northern European territories.
The tunnel contains a stone hermitage that transformed from its original dedication to the Holy Trinity into an important stopping point for travelers through centuries.
Visitors can reach the tunnel through a marked hiking trail from Otzaurte, with the journey taking approximately one hour to complete on foot.
The cave tunnel housed an inn within its natural chamber, where medieval travelers could find accommodation and protection from harsh weather conditions.
Location: Zegama
Location: Asparrena
Part of: Way of Saint James through the Inland Route of the Basque Country.
GPS coordinates: 42.93528,-2.31528
Latest update: September 23, 2025 14:03
Aizkorri
2 km
Aitxuri
2.2 km
Aketegi erpina
2.8 km
Castle of Marutegi
3.4 km
Lazarraga Palace
6.1 km
Ermita De San Adrian
31 m
Aizkorriko galtzada
235 m
Town hall of Zegama
4.9 km
Menhir de Zorrotzarri
1.7 km
Mazkiaranbarrena
5 km
Church of San Martín de Tours, Zegama
5 km
San Adriango mendi-aterpea
739 m
Andre Mariaren Jasokundearen eliza
5.8 km
Iglesia de San Saturnino de Tolosa
6.1 km
Sancti Spiritus baseliza
683 m
Ermita de San Julián de Aistra
4.9 km
Casa Goitialdea 23 - 24
6 km
Caserio Montemayor
6 km
Puente De Presalde O "De Los Amos
5.1 km
Antigua casa consistorial de Asparrena
5.1 km
Iglesia De San Pedro
5.1 km
Town hall of Araia
5.1 km
Artzaenea jauregia
4.7 km
San Bartolome baseliza, Zegama
4.9 km
Elurretako Gure Ama Ermita
2.6 km
Juego De Bolos De Zalduondo
6.1 km
Palacio De Los Ajuria
5.2 km
Camino de San Adrián
1.6 kmReviews
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