Our driver and Guide will pick you up at Dong Hoi Train station, airport , bus station … and hotels at Dong Hoi city. Visit Phong Nha Cave First is considered “First wonders”. We will take a boat to cruise on Son river. While on the boat you will see the greenfield, people, houses and limestone along the river. After 25 minutes on the boat, visitors will arrive at Phong Nha cave, take a couple of hours to see the cave. This cave is a water cave and famous for its rock formation. Lunch at a restaurant with local specialties from the people here processing In the afternoon continue the journey to visit the Chay River – Dark Cave. Explore inside the Dark Cave by zip lining. The longest Zip lining in Viet Nam. Inside the cave, there are many ancient fossils to be found. The fossils are over a million years old. There is a natural mud bath at the end of one of the narrow passages The natural mud bath is very good for the skin. After successfully exploring inside the cave, visitors return to the Chay River by Kayaking. Join exciting games in Chay River such as: Adventure Bridge, basketball, handball, flying swing…… Transfer you back to Phong Nha town or Dong Hoi City.