Geoff Mackley is a man who enjoys the more extreme things in life. A New Zealand-based adventure photographer, his preferred locales are within cyclone territory, inside inescapable caves, on top of unclimbable mountains and, now, at the bottom of a goddamn active volcano.

Last week he and another guy named Bradley Ambrose donned heat suits, rappelled down 400 metres and stood so close to the lava pit of Vanuatu's Ambrym Volcano that the ambient temperature was 1150 degrees. Few, if any humans, have ever been so close to a pit of raging lava (Frodo doesn't count) and the resulting video is, well, words sort of break down at this point. Quite remarkable.