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A person standing next to large stalagmite formations inside a cave.

Explore

The Wet Cave (Underground River)

This flooded segment is the main section of Phong Nha Cave. You explore it entirely by traditional dragon boat.

Photo: tour listing on Viator

After a 30-minute motorized cruise on the Son River, your boat reaches the massive cave entrance. The driver cuts the engine and manually paddles the boat inside. You spend the next 40 minutes gliding through the first 1.2 kilometers of the 14-kilometer subterranean river.

Swimming is strictly prohibited here. The boat serves as your viewing platform for the illuminated rock formations before you reach the dry walking section.

Aerial view of a river with several boats approaching a large cave entrance.
Photo: tour listing on Viator
01

The Cave Entrance

5-10 minutesEngine turns off here

The massive opening measures 20 to 25 meters wide and 10 meters high. It features large, drooping stalactites that gave the cave its historical name, "Wind and Teeth." The boat driver turns off the engine here to reduce noise. They manually paddle you into the quiet, echoing cavern.

View from inside a large cave looking out at a river with boats.
Photo: tour listing on Viator
02

Underground River Chamber

30-40 minutesRequires high ISO

This segment covers the first 1.2 kilometers of the flooded cave system. Colorful lights illuminate spectacular rock formations along the walls and ceiling. Keep your camera ready, but prepare for low-light conditions. A stable hand or high ISO setting is necessary for clear photos.

Book a Boat Tour

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Tour Phong Nha Cave Dragon Boat Half Day3 h to 4 h 5.0 (14)from $40
dragon boat half dayfrom $40 on Viator
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