Blue Pool, Phong Nha, Vietnam Asia, Travel, Vietnam Add comments Apr 182017 This looks like a pool but it’s actually a river flowing through the Phong Nha national park in Vietnam. If you look closely you can see the bridge we walked across as we explored the area. Leave a Reply Cancel reply Your Comment You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> Name (required) E-mail (required) URI