Travel through the heart of the Picos in one day, leaving from Fuente Dé, along the Fuente Dé Vertical Kilometer trail, visiting mythical mountain refuges such as Cabana Verónica and the Urriellu refuge, from there we will border the Naranjo de Bulnes and obtain spectacular views of him, and then descend through a mythical channel from Picos to Espinama.