Ключевые слова: basin, calcium, carbonate, carbonized, cotton castle, denizli, formation, geology, hierapolis, hot spring, landmark, landscape, limestone, mineral, mountain, natural, nature, outdoor, pamukkale, people, pool, rock, sightseeing, terrace, tourism, tourists, travel, traveling, travertine, turkey, turkish, turquoise, visiting, visitors, water, world heritage,