Tresviso is a municipality located in the autonomous community ofCantabria,Spain.[2] The municipality is located 907 m (2,976 ft) above sea level within thePicos de Europa of theCantabrian Mountains. The village is located on a mountain ledge approximately 800 m (2,600 ft) above theDeva River valley bottom. Despite being in Cantabria, the only road access to Tresviso is a narrow road over a 1,320 m (4,330 ft) high pass fromSotres in the neighbouring province ofAsturias. Alternatively, on the Cantabrian side there is a strenuous 3-hour hike from the N621 highway along the Deva featuring many switchbacks.