Debent: What Persia Left Behind Directed by Pejman Akbarzadeh

The Derbent fortification complex, a UNESCO World Heritage Site, is Iran's largest defensive structure in the Caucasus. Located in Russia's Dagestan, it was built to protect the Persian Empire's northern frontier.
Derbent: What Persia Left Behind, also explores the unique architecture of the massive fortress, and how it has been preserved for some fifteen centuries by Persian, Arab, Turkish and Russian rulers. Built strategically in the narrowest area between the Caucasus Mountains and the Caspian Sea, the fortification includes the northernmost Middle Persian (Pahlavi) inscriptions in the world, which are in danger of destruction. The 42-km defence wall of the complex that extended toward the Black Sea had already been destroyed in the Soviet era.