(HBO) - Covering more than 6,000 ha, Thuong Tien Nature Reserve spreads across the three communes of Kim Tien, Thuong Tien (Kim Boi district), and Quy Hoa (Lac Son district). Thuong Tien commune lies in a core zone of more than 5,000 ha. Khu hamlet, inhabited by the Muong ethnic group, has the largest wild forested area in the province.