Pick up at hotel and drive to Cuc Phuong National Park, one of Vietnam's oldest national parks and consequently one of the best managed. It's approximately 22,000 ha of subtropical forest and karst limestone scenery, and home to an extraordinary range of unique species. You'll visit the park's Endangered Primate Centre, where you'll be able to see two of the rarest species in the world, the critically endangered Delacour and Cat Ba langurs. Stay over night in National Park.