Ключевые слова: beautiful scenery, cave, china, colorful, country, effect, environment, geography, geological, geological park, global, hebei province, karst cave, landforms, landscape, lighting, limestone cave, lincheng county, maximum, middle cambrian, multicolor, natural, natural landscape, nature, picture, rock, same latitudes, scenic spot, stalactite, to beam, travel, wonder, xingtai city,