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An elderly English doctor and his 14-year old American nephew go on a perilous journey to Africa in an hot air balloon with an African guide, to retrieve a precious diamond from the top of a volcanic rock, as a gift for Queen Victoria.
An elderly English doctor and his 14-year old American nephew go on a perilous journey to Africa in an hot air balloon with an African guide, to retrieve a precious diamond from the top of a volcanic rock, as a gift for Queen Victoria.
