Experience the world’s largest cave, Vitenam’s Hang Son Doong, from a quadcopter’s POV. The video was filmed by Ryan Deboodt near the entrance and the first and second dolines (skylights), which are 2.5 and 3.5 km inside the cave respectively. Ryan Deboodt used the following stuff: Canon 6D, Canon 16-35mm f4, DJI Phantom 2, GoPro Hero 4 Black. If you are really passionate about to learn more about the cave, there’s a great feature by National Geographic from 2011. In fact this is epic effort, and I’m sure you’d really enjoyed this video. Amazingly beautiful shot, our mother nature is extremely beautiful. Thank you for your work!.