The Island at the Top of the World is a 1974 Disney film starring Donald Sinden and David Hartman.
In London in the year 1907, a British aristocrat named Sir Anthony Ross (Donald Sinden) hastily arranges an expedition to the Arctic to search for his lost son Donald. Donald had become lost on a whaling expedition to find the fabled island where whales go to die.
Sir Anthony employs the talents of a Scandinavian-American archaeologist Professor Ivarsson (David Hartman) and Captain Brieux (Jacques Marin), a French inventor/aeronaut who pilots the expedition in a French dirigible named the Hyperion, which Captain Brieux invented. Upon reaching the Arctic, they meet Oomiak, a comically cowardly/brave Eskimo friend of Donald's, and trick him into helping them join in the search.
Ultimately, the expedition becomes (temporarily) separated from Captain Brieux, and discovers an uncharted island named Astragard, occupied by a lost civilization of Vikings, cut off from the rest of the world for centuries. The Vikings capture Sir Anthony and Ivarsson, but Oomiak escapes. Shortly thereafter they find Donald, but are nearly put to death by the fanatic Godi (pronounced "Go-dah"), a sort-of
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