Ключевые слова: ancient, attraction, background, beautiful, blue, cave, cavern, caves, dark, environment, epirus, formation, geological, geology, greece, history, inside, interior, ioannina, landscape, lighting, limestone, material, mineral, natural, nature, pattern, rock, scenic, stalactite, stalactite cave, stalagmite, stalagmite cave, stone, subterranean, temple, texture, tourism, travel, tunnel, turkey, underground, water,