In the morning, your tour starts with hotel pickup in Hanoi by private vehicle for the drive to Cuc Phuong National Park. On the way, stop at the Endangered Primate Rescue Center, and then head to the heart of the park to start a trekking excursion.
You'll hike to the jungle, following the trail that takes you past huge jungle trees. See different kinds of vegetation as you move up and down the hill through the wild landscape, and see thousand-year-old trees. Trek a bit more and then head back to the starting point. Afterward, refuel with lunch at a local restaurant.
In the afternoon, drive to Hang But, which may seem like the middle of nowhere. Take a ride on a sampan (a wooden boat), cruising along canals carpeted by green rice fields on both sides. Explore a limestone cave, and then return to Hanoi late in the day to end your tour.