The Ngoc Son Ngo Luong Reserve is located in Tan Lac & Lac Son districts of Hoa Binh province. The Ngoc Son Ngo Luong Nature Reserve covers a land area of approximately 19,254ha and forms the central portion of the greater Pu Luong – Cuc Phuong landscape.
The dominant ecosystem in Ngoc Son Ngo Luong Reserve is mixed forests growing on limestone. These forests represent a significant percentage of Vietnam’s remaining northern limestone forests, a globally important karst biome. Many parts of Ngoc Son Ngo Luong Reserve still contain high levels of biodiversity and high rates of endemism. The Reserve contains a range of species listed as globally rare or endangered, and many are protected under Vietnamese law.