Vietnam is the birthplace of wonderful beauty, places with mysterious beauty but surely mentioning Vietnam, not to mention the national literature and literature in Hanoi. This is the first university of our country, bearing a long history.

The 7th wonder of Vietnam is located in Ke Bang Limestone Mountains, Son Trach Commune, Bo Trach District, Quang Binh Province, 60km from Dong Hoi Town. It is hard to describe the majestic beauty of chambers, limestone corridors covered with stalactites under the torchlight of an underground river. Coming to Phong Nha cave, visitors are both moved and more or less nervous when they find themselves lying in the mouth of a giant monster: with the pristine singular shapes that human imagination is spoiled for. give them so many myths and stories. After dozens of scientific expeditions by Vietnamese, French, British ... Phong Nha cave is still there with mysteries.