Ключевые слова: attraction, azores, background, beautiful, beauty, big, brown, cave, caving, color, danger, dark, deep, detail, do, explore, formation, gallery, geological, geology, ground, gruta, inside, interior, karst, landscape, lava, natal, natural, nature, nobody, portugal, rock, scenic, speleology, stalactite, stalagmite, stone, terceira, tourism, travel, underground, view, volcanic vitoria,