The protected forest that covers the northern third of Phu Quoc, encompassing around 31,000 hectares — over half the island's total area. The park contains old-growth tropical forest, mangroves, and coral reefs in the waters off its coast. Wildlife includes the endemic Phu Quoc ridgeback dog (now a rare breed), slow lorises, civets, deer, and over 150 bird species.
The park is best explored with a local guide, who can navigate the trail system and point out wildlife that an independent visitor would miss entirely. The southern entrance near Duong Dong is most accessible; the forest interior is dense and the heat is intense. Early morning departures are strongly recommended.