Full Cast & Crew

Günther Oskar Dyhrenfurth as Self - Expedition leader & lecturer, Germany (as Professor Dr. Günter Oskar Dyhrenfurth)

Hettie Dyrenfurth as Self - Expedition participant, Germany

Hermann Hoerlin as Self - Expedition participant, Germany

Helmuth Richer as Self - Expedition participant, Germany (as Dr. Helmuth Richer)

Ulrich Wieland as Self - Expedition participant, Germany

John Hannah as Self - Expedition participant: England

George Wood Johnson as Self - Expedition participant: England

Frank Smythe as Self - Expedition participant: England

Erwin Schneider as Self - Expedition participant: Austria

Charles-Georges Duvanel as Self - Expedition participant: Switzerland

Marcel Kurz as Self - Expedition participant: Switzerland

Lowell Thomas as Narrator (USA)