Walk the thousand-year-old tree loop and the Cave of Prehistoric Man at Cuc Phuong
First national park, 20km deep
A full day inside Vietnam's oldest national park: rescue centres and lunch at headquarters in the morning, a drive 20km further in to the park centre, a 7km loop on foot to a thousand-year-old tree, and the Cave of Prehistoric Man on the way back out.
Why it's unique
Cuc Phuong was gazetted in 1962 and is the first national park in Vietnam, which is a clean claim and an unusual one to be able to walk around in. The park's own standard day pairs two things that are individually not unique: a 7km loop through old-growth forest to a tree a millennium old, and the Cave of Prehistoric Man, where human skeletons and stone tools dated to roughly 7,500 years ago were excavated.
The day that strings them together is what you would travel for, and it is only possible because the reserve is deep enough to hold both. Very few first-generation national parks anywhere let you walk from a thousand-year-old tree to a seven-thousand-year-old burial in the same afternoon, inside the same forest.
Before you go
The park is 20km deep and you need your own transport for the inner section. Visitors who arrive by taxi and expect to walk from the visitor centre see the rescue centres and nothing else, which is the single most common way to waste this day. The park's own one-day programme is the honest template: rescue centres and lunch at headquarters, then drive to the park centre, walk the loop, and finish at the cave on the way out.
Take a guide for the loop rather than the free sketch map. The park says so itself and the trail junctions are unhelpful. Bring a head torch for the cave and insect repellent for the loop, both of which the park explicitly lists, and expect leeches after rain. Rooms exist at both headquarters and the park centre, and staying inside is the only way to reach the night activities.