Widely distributed calcite and aragonite crystal in the cave passage are originated from ancient pool deposits.
洞内大片分布的石花起源于四大古水池沉积物的存在。
Pictured in October, the foreboding entrance to Mortimer's Hole (bottom center), another cave passage beneath Nottingham Castle, beckons downhill from the palace itself.
照片摄于十月份，这是通向莫蒂默洞穴的正面入口(图片下方中部)，诺丁汉城堡的另一个地下洞穴通道，从宫殿向下延伸。
A recent exploration results show that in remote jungle areas in Vietnam has recently found a large cave so far discovered in the world's largest single cave passage.
一项最新勘探结果显示，最近在越南偏远丛林地区发现的一个大型洞穴是迄今为止发现的世界上最大的单个洞穴通道。
A deer painted in Altamira cave's "Polychrome Hall," a passage full of red ochre Paleolithic paintings. To the lower left are sensors to measure temperature and humidity in the cave.
画在阿尔塔米拉洞穴的“多彩大厅(旧石器时代赭红色的一段通道)”里的麋鹿。
Imagine the condition of men living in a sort of cavernous chamber underground, with an entrance open to the light and a long passage all down the cave.
想象人们住在一个地下洞穴之中的情形，一个出口通向光明，一条漫长的通道引向洞内。
The Panxian Dadong, with a mapped passage of 1660m long is a large karst cave system complicated by multi genesis of morphology.
盘县大洞是一个形态和成因复杂的大型喀斯特洞穴系统。
The Panxian Dadong, with a mapped passage of 1660m long is a large karst cave system complicated by multi genesis of morphology.
盘县大洞是一个形态和成因复杂的大型喀斯特洞穴系统。
应用推荐