An incredible video has been released showing the moment a wingsuit diver flies through a cave only 2m wide.
Daredevil basejumper Uli Emanuele shot the footage with a GoPro Hero4 camera attached to his helmet for the camera company, in what GoPro described as "possibly the most technical and difficult base jump ever".
The cave is located in Lauterbrunnen, Switzerland, and is one of the most popular areas in the world for basejumping.
Emanuele told Geeky Gadgets: "I found this hole three years ago. At that moment it was impossible to fly through. After three years of hard training I was ready for it. I opened two different exits. I flew through the hole four times. That is the smallest hole ever flown through by anyone."
The 29 year old managed the feat in September 2014 but this is the first time the footage has been made public.