知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 ” The cave is comfortably heat with average humidity, and a little muddy stream flows by it. Even though specialised devices isn’t needed, it’s highly recommended to bring protecting equipment to circumvent soil and guano staining and a trusty flashlight for navigation. Check out our strolling tour https://rg8888.org/app/