The port of La Matanela represents the geographical limit between Cantabria and Burgos. Located at 971 meters above sea level, it offers beautiful views of both provinces.
The port of La Matanela is a mountain pass on the southern limit of the Pasiegas Mountains. It is located 17.4 km from Vega de Pas and 13 from the Escudo port, which is reached after crossing the Magdalena pass.2 It has an average slope of 3% from the town of San Pedro.
La Matanela Pass, 1,005 m. Border between Burgos and Cantabria, Meseta and Pas. From Burgos, it's known as La Magdalena. I copied the altimetry from altimetrias.net, which can be trusted.