Cave boat tour
A must-see attraction in Phong Nha is the cave giving the name to this area. This is located at the top of a fork in the Son River; to reach it; you’ll purchase tickets from the Tourism Center in town and then hop into a dragon boat which will take you 3 km up the river to the entrance of the cave. You’ll then continue through the first km of the cave by boat, and on your way out, be able to explore about 500 m by foot. The boat picks you back up and returns you at the Tourism Center in town. This is a great choice if the weather is too hot for riding a motorbike and you need a cool escape. The cave is artificially lit in a very tasteful manner, highlighting the most fascinating formations well and providing excellent conditions for photographic opportunities.
Price: 150,000 VND/per person entrance fee and 360,000 VND/boat (divide boat price by number of people on the boat and maximum is 12 people per boat); you can pay an extra 80,000 VND to visit Tien Son, a smaller mountain cave next to Phong Nha cave.
Adventure: for 1,700,000VND you can do a day trip and conquer 4.5km by kayak