你见过这幅景象吗?洁白如玉的钟乳石悬垂欲坠,形状各异的石笋拔地而起,蝾螈在史前野兽的古老遗物间四处乱跑,洞顶水滴似粒粒珍珠落入深渊,奔腾的溪流注入银光闪闪的清潭……这一切有如仙境,但又千真万确,这就是常见的洞穴奇观。 世界上有许多神秘的洞穴,永远无人知道它们通往何方,有多深 Have you seen this picture? White jade stalactites dangle, stalagmites of different shapes, the salamanders ran around in the ancient relics of prehistoric beasts, waterdrops like grain pearls into the abyss Pentium stream into the shiny Cheongdam ... all this is like a fairyland, but true, this is a common cave wonders. There are many mysterious caves in the world, no one knows where they go, how deep