Visit Tranh Stream and Da Ban Stream
Compared with the waterlogged Mekong Delta, Phu Quoc has very little surface moisture, but there are several springs originating in the hills. The most accessible of these is Tranh Stream ; look for the entrance sign and concrete tree from the Duong Dong–Vong Beach road. From the ticket counter it’s a 10-minute walk through the forest to the falls.
Da Ban Stream is a white-water creek tumbling across some attractive large granite boulders. There are deep pools and it’s nice enough for a dip. Bring plenty of mosquito repellent.
For both of these falls, the best months to visit are between May and September – by the end of the dry season there’s little more than a trickle.
Visiting Phu Quoc National Park
About 90% of Phu Quoc is forested and the trees and adjoining marine environment enjoy official protection. Indeed, this is the last large stand of forest in the south, and in 2010 the park was declared a Unesco Biosphere Reserve.
The forest is most dense in the northern half of the island. The area is a forest reserve (Khu Rung Nguyen Sinh) and you’ll need a motorbike or mountain bike to get through it. There are a few primitive dirt roads, but no real hiking trails.