Ключевые слова: asia, before 403 earthquake, bridge, canyon, central crossisland highway, chieftain profile rock, cliff, columns, concrete, concrete bridge, east asia, empty, environment, formation, geological phenomenon, gorge, grotto, hike, hiking, hualien, landscape, liwu river gorge, mountain, mountains, national park, natural, nature, no people, pillar, railing, ravine, river, rock, spines, steep, stone, stream, swallow grotto, swallow grotto trail, swallow grotto yanzikou, taiwan, taroko, taroko gorge, taroko national park, trail, trekking, valley, watercourse, yanzikou, yanzikou trail,