Crazy Guy Stands Beside Raging Lava Flow in Homemade Suit...

[http://youtu.be/qKbX-8RXg9E]That's a volcano flow...  ...molten-hot rock. Geoff Mackley, Bradley Ambrose, Nathan Berg built the respirator and heat proximity suit them...

http://www.neatorama.com/2012/09/25/Crazy-Guy-Stands-Beside-Raging-Lava-Flow-in-Homemade-Suit/