Ключевые слова: beautiful, calcite, calcium carbonate, cave, cave coral, cave popcorn, cavern, corallite, coralloid, deserted, destination, empty, environment, erosion, formation, geological, geology, limestone, location, luray, luray caverns, mineral, natural, natural wonder, nature, no people, rock, rocky, rough, shenandoah valley, speleothem, stone, subterranean, tourism, travel, underground, va, virginia,