Ключевые слова: beauty in nature, blue sky, calm, cantabria, castro urdiales, clear day, coastal cliffs, coastal scenery, coastal trail, erosion, geological features, geological strata, hiking, layered rocks, maritime, natural landscape, nature, northern spain, ocean view, outdoor, panoramic, pristine environment, rock formations, rugged coast, scenic view, seascape, serene, sightseeing, tourism, travel, untouched nature,