Salvatierra-Agurain was a sizable medieval town in the Alava County on the main road east-of Vitoria-Gasteiz towards Navarre or via the medieval tunnel of San Adrian through to the coast at San
Sebastian. Chartered by King, it was home to a number of noble families who endowed its churches and mounted coats of arms on theirfacades in the main street.
Now conservation and planning is managed by ARABARRI
Source Diputation Foral de Alava (1999) See and Discover ALAVA: guide for Visit,Vitoria- Gasteiz p. 64 and 46 (Tunnel of St-Adrian.)
Baedeker Spain and Portugal 1913 mention p14
Braun & Hogenberg Vol V.16.1, originally drawn by Hoefnagel in 1567 illustrates and describes the St Adrian tunnel.