Werner Herzog
Narrator (voice)
Clive Oppenheimer
Self - Volcanologist
Scott Rowland
Self - Transportation Dept
Stefan Pashov
Self - Philosopher, Forklift Driver
Doug MacAyeal
Self - Glaciologist
Ryan Andrew Evans
Self - Filmmaker, Cook
Kevin Emery
Self - Survival School Instructor
Olav T. Oftedal
Self - Nutritional Ecologist
Regina Eisert
Self - Physiologist
David R. Pacheco Jr.
Self - Journeyman Plumber
Samuel S. Bowser
Self - Cell Biologist
Jan Pawlowski
Self - Zoologist
William Jirsa
Self - Linguist, Computer Expert
Karen Joyce
Self - Traveler, Computer Expert
Libor Zicha
Self - Utility Mechanic
Ashrita Furman
Self - Multiple World Record Holder
David Ainley
Self - Marine Ecologist
William McIntosh
Self - Volcanologist, Geochronologist
Peter Gorham
Self - Physicist
Ernest Shackleton
Self - (archive footage)
Shaun Phillip Cantwell
Self - General Assistant