Thanks to the unique geographical features and tropical climate, Vietnam is land of heart-touching spectacular landscape and hundreds of caves waiting to be explored. Nestled at the Phong Nha – Ke Bang National Park, where Chay River is situated, is the Quang Binh Dark Cave. During the war against American army, the dark cave was used by the Vietnamese as shelters to avoid bombs. In this tour, you'll depart for Phong Nha National Park riding a comfortable shuttle bus. Along the way, you'll stop to visit La Vang Holly Land, or popularly called as Basilica of Vietnam Catholic. Have a delicious lunch when you arrive at the destination and before you start your cave tour. To get you pumped up for the tour, you'll first take the zip-line from the wildlife observation tower and swim to the entrance of the Dark Cave. Explore and learn about the cave's significant history under the instruction and guidance of your English-speaking guide.