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