日本、台灣、韓國、菲律賓、越南、香港、美國、法國、德國、馬來西亞、泰國、阿拉伯、柬埔寨、中國、澳門、賽普勒斯、新加坡、朝鮮、澳洲 ” The cave is easily warm with moderate humidity, and a little muddy stream flows by means of it. When specialised machines isn’t expected, it’s sensible to carry protective gear to avoid soil and guano staining and also a trusty flashlight for navigation.  ... https://rg8888.org/app/