Phu Quoc National Park protects 31,422 hectares of primary lowland tropical rainforest across the northern two-thirds of the island, established as Vietnam's first UNESCO Biosphere Reserve in 2006.
The Tien Son Dinh massif rises to 603 metres at its highest point, forming the watershed spine that separates the island's eastern fishing villages from the developed western coast. The park shelters 208 bird species, including the critically endangered Edwards's pheasant and the white-winged magpie, alongside 38 mammal species such as slow loris, silvered langur, and long-tailed macaque. Dipterocarp forest dominates the canopy, with specimens of Hopea odorata and Shorea roxburghii reaching 40 metres. The forest floor reveals pitcher plants, ground orchids, and bracket fungi that decompose fallen hardwood trunks. A Phu Quoc National Park trekking tour follows established trails cut by rangers in the 1990s, when the protected area was formally gazetted to halt logging and wildlife trade.
The Tien Son Dinh trail network comprises three main routes: the summit trail from Ham Ninh, the ridgeline traverse to Suoi Tranh, and the circular loop via Bat Cave. Each route passes through distinct elevation zones. Below 200 metres, the understorey is dense with rattan, climbing bamboo, and fern thickets. Between 200 and 400 metres, the forest opens into cathedral-like stands of mature dipterocarp, where the canopy filters 95 per cent of sunlight. Above 400 metres, wind-pruned trees and exposed granite boulders mark the transition to montane scrub. The trails themselves are narrow, root-laced footpaths that require scrambling over moss-covered boulders and crossing seasonal streams. During the wet season—May through October—the trails become slick and leeches are common. The dry season from November to April offers firmer footing and clearer sightlines for birdwatching, though midday temperatures can exceed 32°C even under canopy cover. Trekkers regularly encounter monitor lizards basking on sunlit rocks, hornbills feeding in fruiting fig trees, and troops of macaques moving through the mid-canopy.
Guided treks emphasise low-impact observation and biodiversity interpretation. Rangers trained by the park's conservation unit lead most commercial departures, using field guides to identify orchid species, medicinal plants harvested by local communities, and seasonal fruiting cycles that attract endemic wildlife. The summit viewpoint at Tien Son Dinh offers a 270-degree panorama: the Gulf of Thailand to the west, the Hon Thom cable car and An Thoi archipelago to the south, and the forested interior stretching north toward Ganh Dau. On clear mornings, the Cambodian coast is visible 60 kilometres to the northwest. The return descent typically includes a stop at natural spring pools fed by runoff from the massif, where water temperature holds steady at 24°C year-round. These pools support freshwater crabs and dragonfly larvae, indicator species of intact watershed health. The park entrance at Ham Ninh village provides the most direct access to the main trail system, though the route from Suoi Tranh offers a longer, less trafficked alternative for experienced trekkers.
6 hr
