Sense

This is a picture of a lake located inside the world's largest cave in Vietnam Hang San Dong. It is easy to estimate how big the cave is, by looking at the size of the boats A man named Daniel Kordan took a picture of the lake inside the cave located in the base. He and his team pulled the lake in this cave by hiking for 5 days. The cave is then illuminated using the underwater torch and embiencious lights brought with them. Originally the underwater torches are placed by the drivers of every boat under the boat and the ambient lights are lit from the back. Then this picture was taken!