• 8:00 AM: Pick up guests in Phong Nha • 8:30 - 9:00 AM: Gather at the Operations House. The group will be introduced to the Phong Nha Cave Complex and the 2000ha of Abandoned Valley; introduced to the trekking route, safety rules and itinerary summary, prepared logistics and warm up before starting the trekking. • 9:30 AM: Start trekking to explore the deep forest of Abandoned Valley. Walk through dense forest and mountainous terrain, flat roads, climbing slopes, and crossing the sharp stone mountain range for about 4.5km. Immerse yourself in the natural scenery, mountains, and forests, along with the typical bamboo forest of Thung Tre. • 11:00 AM: Arrive at the Dark Cave Exit Have a light snack, wear exploration equipment, and prepare to explore 1km inside the back door of Dark Cave (Dark Cave Exit) • 11:30 AM: Visit and explore part of the most diverse cave complex in Phong Nha Ke Bang: * A moss-covered stalactite system - extremely special, only a few caves have.

•1:30 PM: End of sightseeing and have lunch. • 2:30 PM: Start trekking through the forest, the group will arrive, E cave with the most beautiful turquoise water in Phong Nha. • 5:00 PM: Free time to swim, and experience Fish Massage at the entrance of E cave (Depending on the situation of fish in the cave). • 5:30 PM: Have BBQ dinner. • 6:30 PM: Participate in campfire activities, stargazing (weather permitting) • 8:00 PM: The group rests and ends the first day.