The bridge was historically significant for the transhumance sheep migration routes connecting the high pastures of the Sierra de Guadarrama.
It crosses the Angostura River, which is one of the main headwaters of the Lozoya River, the primary water source for the city of Madrid.
The structure is built primarily from Guadarrama granite, a stone type characteristic of the local geology.
The name 'Angostura' translates to 'narrowness' or 'strait', reflecting the tight canyon passage carved by the river at this location.
The Angostura Bridge is a historic stone structure located within the Sierra de Guadarrama National Park, crossing the Angostura River. It sits along a traditional path used historically by shepherds and travelers navigating the high mountain passes of Madrid. The bridge is constructed of local granite, featuring a single arch design that integrates into the surrounding pine and oak forest landscape. It serves as a vital junction for hikers exploring the Lozoya Valley and the route towards the Peñalara massif. The surrounding area is characterized by clear, cold mountain water and diverse riparian vegetation. It is a key waypoint for the GR-10 long-distance trail network.
From the river bank slightly downstream, capturing the bridge arch framed by the overhanging forest canopy.
Wear sturdy, broken-in hiking boots, as the approach paths consist of uneven, rocky forest terrain.
Carry sufficient water, as there are no facilities or services available at the bridge itself.
Bring a layered windbreaker, as mountain temperatures can drop significantly even during the summer months.
Attempting to cross the river outside of the bridge structure, as the granite rocks are extremely slippery when wet.
Practice leave-no-trace principles; carry out all trash and remain on marked trails to protect the fragile alpine ecosystem.
