Phong Nha Ke Bang Travel Guide: Phong Nha– Ke Bang national park is known as one of the most attractive destinations in Vietnam. Every year, a lot of people come here to visit and explore its caves as well as its flora and fauna. Phong Nha Cave Travel Guide, however, not all of them know tips to have a good trip to travel to Phong Nha. How to have a nice trip and how to make your time in Phong Nha interesting? Let read some following tips and make your trip become more meaningful.