Ключевые слова: cave, cavern, caving, crimea, dark, deep, erosion, flowstone, formation, geologic, geological, geology, grotto, hole, inside, interior, karst, karstic, light, limestone, low, mountain, natural, nature, old, potholing, rock, solutional, speleology, speleothem, spelunking, stalagmite, stone, tourism, travel, tunnel, underground, weathering, wet,