Embark on a full-day adventure to Phong Nha Cave and Dark Cave from Dong Hoi or Phong Nha. Cruise along the Son River to explore Phong Nha Cave, a UNESCO-listed wonder known for its stunning stalactites and stalagmites. In the afternoon, head to Dark Cave for thrilling activities including ziplining, mud bathing, swimming, and cave trekking with helmet and flashlight. Surrounded by lush jungle and limestone mountains, this tour is the perfect mix of nature, adventure, and relaxation—an unforgettable experience in Phong Nha-Ke Bang National Park.