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 easily heat with reasonable humidity, and a small muddy stream flows as a result of it. Even though specialized tools isn’t demanded, it’s highly recommended to carry protective gear to stop soil and guano staining as well as a trusty flashlight for navigation. https://rg8888.org/