1. A hoop cave dwelling is not a real cave, but only a cave-shaped house put up with brick or adobe on the level ground modeled after a cave dwelling. 箍窑不是真正的窑洞，是以砖或土坯在平地仿窑洞形状箍砌的洞形房屋。
2. In the foreground is a cave housing a stone circle of unknown origin named False Kiva. The cave was briefly lit by flashlight during the long exposure. 画面中最近处是一个岩洞，里面有一个用石头垒成的圆圈，来历不明，人们叫它“虚拟地穴”。
3. Cave of Crystals, Mexico Massive beams of selenite dwarf human explorers in Mexico's Cave of Crystals, deep below the Chihuahuan Desert. 水晶洞穴，墨西哥在奇瓦瓦沙漠下面的墨西哥水晶洞穴里，亚硒酸盐形成的巨大柱体使人类探险家看上去如此矮小。
4. Archaeologists have found numerous prehistoric cultural sites in the province, including the famous stone age Guanyin Cave Culture and Big Cave Culture. 历史学家在该省发现了很多史前文化遗址，其中包括著名的“观音石窟文化”？和“大石窟文化”。
5. Photo Gallery: Caves A spelunker in a glacier cave in Greenland gazes upon colors and shapes that look more like a swirling galaxy than a cave formation. 洞穴的图片画廊。一位爱好探索洞穴的人在一个冰川溶洞位于格陵兰目光注视上颜色和形状，看起来更像一个旋转的银河比一个洞穴的建造。
