Ключевые слова: ancient, bacalar, bioreserve, caribbean, cenote, cenote cocalitos, cocalitos, colorful, crystal clear water, ecosystem, estromatolitos, geological, holidays, island, lagoon, lakes, landscape, live stone, mayan, mexican, mexico, nature, old, paradise, prehistoric, quintana roo, reserve, riviera maya, scenery, sedimentary, stromatolites, stromatoliths, sunlight, touristic, tranquil, travel, tropical, tropics, vacation, yucatan,