George Kourounis, of the TV series Angry Planet, rappelled into Marum Crater, an active lava lake on the summit of the Ambrym Volcano in the Pacific island nation of Vanuatu. The action in the video above heats up at 1:10.
He was joined by Sam Cossman and volcanic pioneers Geoff Mackely and Brad Ambrose.
Related: Drone dodges eruptions as it films inside active volcano
Along the way Kourounis stopped to take what may be the hottest selfie ever:
