Tiwai Island sits in the Moa River in southern Sierra Leone, wrapped in lowland rainforest and run as one of West Africa's best community conservation projects. It is only about 12 sq km, but the wildlife density is extraordinary: eleven primate species, pygmy hippos in the river channels, forest birds, butterflies, and the thick green hush of the Upper Guinean rainforest.
The island is not a polished safari stop. You come here for guided forest walks, canoe trips on the Moa River, and the chance of hearing chimpanzees calling somewhere beyond the trail. The simple Tiwai Island camp keeps you close to the forest; nights are dark, humid, and alive with insects and frogs.
In 2025 Tiwai was inscribed on the UNESCO World Heritage list as part of the Gola-Tiwai Complex, along with Gola Rainforest National Park. That status is deserved, but it has not made the place easy to reach. Roads in the south can be slow, especially in the rains, and you should arrange transport and accommodation before setting out.
Most travellers combine Tiwai with Kenema, Bo, or a longer loop toward the Liberian border. Bring cash, insect repellent, a torch, and patience; the reward is one of the most intimate rainforest experiences in the region.