The only way to get to there is to join a guided tour. To get to Son Doong Cave, you will have to reach the only village located inside the Phong Nha Ke-Bang National Park: the Ban Doong village, which is home to ethnic minorities. This region is only accessible by foot seeing as it is surrounded by dense jungles. It is a 2 to 4 day trek to reach the entrance of the cave. The tours are exclusive to https://oxalisadventure.com

Ba Ho Waterfalls
The best way to get to the Ba Ho Waterfalls is to rent a motorbike from Nha Trang and drive