Monte Santiago, Nature reserve in Berberana, Spain

Monte Santiago is a natural monument in the eastern Sierra Salvada, on the border of Burgos, Álava and the Orduña enclave. It holds a beech forest and heathland around 900 m, and the Nervión rises here before dropping over the Salto del Nervión, a waterfall of more than 200 m, into the Délica valley.

A document from San Millán de Suso dated 1075 first mentions the monastery of Sancti Iacobi de Langreiz here, whose abbot that year was Bela. The monastic community lasted until the late 16th century, when the monastery became the empty chapel of Santiago. In 1591 the four communities sharing the mountain settled rights to wood, water and pasture, and in 1775 they rebuilt the Quartango wolf trap in stone.

The Casa del Parque Monte Santiago functions as an educational center where visitors learn about local traditions, wildlife conservation, and environmental protection efforts.

Access roads reach the site from the Orduña pass (A-2625) on the Álava side and via the BU-556 from Berberana. Twelve marked PR trails (PR.BU.41–52) start from the pass, including the Mirador del Nervión and Senda del hayedo, leading to the overlook above the Delika waterfall. The terrain is karst with dolines and caves, so stay on marked paths.

The Salto del Nervión falls more than 200 metres from the karst plateau of Monte Santiago into the Délica valley, on the Álava side of the border. The stream above it is the source of the Nervión, fed by underground water running through the limestone, and the flow is strongest with snowmelt and rain.