In this new 6-minute film, cave, adventure, and travel photographer Ryan Deboodt takes us on a breathtaking aerial tour of the world’s largest cave, Hang SonDoong, located in central Vietnam. Deboodt brought a drone and an array of cameras to help capture the cave system, the largest chamber of which is 5 kilometres (3.1 mi) long, 200 meters (660 ft) high and 150 meters (490 ft) wide. Despite its enormity, the cave was only discovered in 1991 by a local man, and it wasn’t even studied by scientists until about five years ago. One of the most disorienting thing about watching Deboodt’s film was my brain not comprehending the scale of what I was looking at. It’s only once you notice the ant-like people walking through some of the shots that you realize just how massive this place is.