Phong Nha Caves are the complex of 14 grottoes situated in a region of limestone mountains in Ke Bang National Park. Phong Nha Cave have a total length of 7,729 m. Phong Nha Cave were listed as a World Natural Heritage Site in July of 2003 by Unesco. The Cham People has used Phong Nha Cave as Buddhist sanctuaries in the 9 and 10 centuries. Visit the cave, you will have a chance to explore the remain of Cham altars and inscriptions inside the cave.

Day 1: Hue - Ke Bang National Park - Phong Nha Caves - Dong Hoi (L, D)
After about 2 and half hours from Hue, on the way stop to visit Vinh Moc underground tunnel, one of the most famous battle-field in Vietnam War, Ben Hai River, Hien Luong Bridge, lying in the Demilitarized Zone of the Vietnam war. Lunch at Dong Hoi Town, then continue to Phong Nha – Ke Bang. Getting on boat and cruise along the river to Phong Nha Cave. The deeper one penetrates, the more magical are the natural aspects of the caves. After on boat for 700m, a large dry passage is appear, then you can walk to discover the cave for 500m more. You will have a chance to explore the remain of Cham Altars and Inscriptions inside. overnight in Dong Hoi Town (Sun Spa Resort)

Day 2: Dong Hoi - DMZ - Hue (B, L)
Drive back to Hue with a stopover at historic Khe Sanh Combat, Ho Chi Minh Trail, Dong Ha Town, Rock Pile. Return to Hue in the afternoon via Quang Tri Citadel. End tour.