barranco de la mea, spain

geomorphology conservation environment merindades cantabrian calcareous ecotourism recreation puentedey mountains limestone formation phenomena ecosystem landscape barranco castilla mountain trekking riverbed wildlife tranquil castile natural walking geology geopark habitat tourism scenery ravine burgos europe object canyon dedile valley eroded nature spain prcbu karst stone trekk route gorge river scene path leon walk tour rock view area mea len