The mountains of the Caucasus form a magical border between Europe and Asia. Filmmaker Henry M. Mix and his crew spent over a year in Russia's highest mountains. The result is an impressive documentary about the natural wonders to be found between the Black and Caspian Seas.

The mountain worlds of the Caucasus mark the border between Europe and Asia. The film shows the species and landscape diversity of the lesser Caucasus in Armenia, Georgia, and Azerbaijan.