Bosque de Muniellos – UNESCO Biosphere Reserve
An hour's drive from Salas into the mountains of Muniellos lies one of the largest and best-preserved oak forests in all of Europe, protected as a UNESCO Biosphere Reserve and strict nature reserve. Brown bears, wolves, capercaillie and otters all live here — and the forest itself, ancient and cathedral-like, is reason enough to make the journey.
Why Muniellos is Extraordinary
The Reserva Natural Integral de Muniellos covers over 5,500 hectares of sessile oak forest that has never been logged at industrial scale. The trees are enormous, gnarled and draped in moss; the forest floor is a carpet of ferns and wildflowers depending on the season. Walking beneath the canopy feels genuinely primeval.
The reserve is home to one of the most important Cantabrian brown bear populations in Spain. You are unlikely to see a bear on a day visit, but the knowledge that they are out there — and that this forest is large enough to sustain them — changes the quality of your attention as you walk.
How to Visit Responsibly
Access to Muniellos is strictly controlled: only 20 visitors per day are permitted, and permits must be booked in advance through the Principality of Asturias's environmental agency (Medio Ambiente). The permit system is competitive, especially in summer and autumn — book weeks ahead.
The main trail is a circular route of approximately 12 kilometres starting from the Tablizas car park near Moal village. It takes 5–6 hours at a comfortable pace and involves some elevation gain. The autumn colour — gold, copper and russet — is spectacular from late October into November.
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