Most people come to Ninh Binh for the karsts. Fewer make it as far as the jungle.
Cuc Phuong is Vietnam's oldest national park, founded in 1962, protecting 220 square kilometres of ancient lowland rainforest. In one day you visit the Endangered Primate Rescue Centre β gibbons, langurs, and slow lorises rescued from the wildlife trade β trek primary forest to a thousand-year-old fig tree, and explore a cave with human traces going back 7,500 years.
Small group. Hotel pick-up from Ninh Binh, lunch, every entrance fee: all in.