The Phong Nha-Ke Bang National Park, inscribed on the World Heritage List in 2003, covered 85,754 hectares. With this extension, the site covers a total surface area of 126,236 hectares (a 46 % increase) and shares a boundary with the Hin Namno Nature Reserve in the Peoples Democratic Republic of Laos. The Park’s landscape is formed by limestone plateaux and tropical forests. It features great geological diversity and offers spectacular phenomena, including a large number of caves and underground rivers. The site harbours a high level of biodiversity and many endemic species. The extension ensures a more coherent ecosystem while providing additional protection to the catchment areas that are of vital importance for the integrity of limestone landscapes.
Covered mostly with tropical rainforest, Phong Nha-Ke Bang Park is one of the most important eco-regions of the Indo-Pacific. It also offers many significant geomorphic features including underground rivers, dendritic caves, dry caves, suspended caves and terraced caves. Many endangered animal species still roam the area including black bears, tigers and elephants. Composed of 300 caves and grottos, Phong Nha-Ke Bang National Park offers countless activities, amongst them visiting caves and grottos by boat as well as mountain climbing and forest trekking. The park is huge and home to various interesting flora; many of which are hardly found elsewhere. This is a fine chance to learn more about rare and unusual species.