Have you ever watched movie named “Journey to the Center of the Earth”, a 2008 American 3D science fantasy adventure film directed by Eric Brevig and starring Brendan Fraser, Anita Briem, and Josh Hutcherson?Have you ever thought that you are the main character of the movie to have an opportunity to see the enormous nature?Just try to look through this book to learn more about Son Doong Cave in Vietnam, I guess you can find something like the sightseeing as in that movie.The Phong Nha-Ke Bang National Park in Vietnam contains the oldest karst system in Asia, between 400-450 million years old. Hang Son Doong itself is relatively young, with the analysis of sediment dating it to be only 3 million years old.In Son Doong cave, the largest cave is over 6 km long, 150m high and 200m wide. As a result, Son Doong pass Deer Cave, Gunnung Mulu National Park in Malaysia to become the largest cave in the world. This cave has a beautiful stalactite system with images of “Eden” in the cave, or a collection of “pearls” thousands of years old. And it is the discovery, discovery and announcement of the Son Doong cave that has transformed the Phong Nha – Ke Bang cave area into a world famous cave kingdom.Tag: vietnam travel guide, travel guide to vietnam, Son Doong Cave, Vietnam Travel guide 2019, Travel guide 2019, Quang Binh, Phong Nha, Phong Nha Ke Bang, Vietnam tourist spots, Vietnam tourism, Asia tourism, Asia travel guide, Travel guide to Asia, discovery tour, exploring tour, backpacking, backpacking to Vietnam, backpacking to Asia, travel to nature, biggest cave, biggest cave of the world, largest cave of the world