The train arrives at Dong Hoi Station at 7:00 am, be met by the Vietnam Backroads Team, and stops in town for breakfast, coffee, and tea before a transfer to Paradise Cave. The journey by bus takes about an hour and a half to go through the mountain scenery of a sub-national park forest, passing lakes and valleys on winding roads and rolling limestone mountains. Explore Paradise Cave, one of the most beautiful caves globally, for many reasons: for its longest underground River and for its most beautiful underground lake. It's the world's most beautiful cave, with a length of 31.4 km and the longest dry cave in Asia. We'll continue our journey by vehicle through the limestone mountain range to a nice restaurant by the River to enjoy a delicious lunch. Return to Phong Nha to check in the hotel—free time in the afternoon.