Günther Oskar Dyhrenfurth
Self - Expedition leader & lecturer, Germany (as Professor Dr. Günter Oskar Dyhrenfurth)
Hettie Dyrenfurth
Self - Expedition participant, Germany
Hermann Hoerlin
Self - Expedition participant, Germany
Helmuth Richer
Self - Expedition participant, Germany (as Dr. Helmuth Richer)
Ulrich Wieland
Self - Expedition participant, Germany
John Hannah
Self - Expedition participant: England
George Wood Johnson
Self - Expedition participant: England
Frank Smythe
Self - Expedition participant: England
Erwin Schneider
Self - Expedition participant: Austria
Charles-Georges Duvanel
Self - Expedition participant: Switzerland
Marcel Kurz
Self - Expedition participant: Switzerland
Lowell Thomas
Narrator (USA)
