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Ключевые слова:
beautiful, beauty, cascade, cave, cavern, caving, clean, creek, destination, entrance, exploring, flow, flowing, formation, fresh, geology, green, grotto, ground, hole, hydrogeology, hydrology, karst, karstology, landscape, limestone, moss, mountain, natural, nature, opening, quiet, rock, scenery, scenic, source, speleology, spelunking, spring, stone, stream, travel, tunnel, underground, wall, water, waterfall, wellspring, wild,