Thien Duong cave is located in Phong Nha - Ke Bang National Park, Son Trach commune, Bo Trach district, Quang Binh province (Photo: VNA)
The cave is surrounded by a primary forest within the core zone of a 191-metre high limestone mountain system (Photo: VNA)
Thien Duong cave is awarded with two records by Vietnam Record Organisation in 2011: ‘Cave with the longest wooden bridge in Vietnam’ and ‘Long dry cave with the most unique stalactites and stalagmites system in Vietnam’ (Photo: VNA)
Most of the cave ground is clayed soil with flat surface, which is convenient to step on (Photo: VNA)
VNA