The Great Wall of Gorgan

About

The Great Wall of Gorgan, located in northern Iran, is a historical structure built during the Sasanian era, specifically between the 420s and 530s AD. It stretches for approximately 195 kilometers and features over 30 fortresses at intervals of 10 to 50 kilometers. The wall was constructed using mud-bricks, fired bricks, gypsum, and mortar, with a width of 6 to 10 meters. It is also known as "The Red Snake" due to the color of its bricks. The wall served as a defensive system to protect the Sasanian Empire from northern threats, such as the Hephthalites or White Huns. It is notable for its sophisticated engineering, including a ditch and canals that supported its construction. The Great Wall of Gorgan is longer than Hadrian's Wall and the Antonine Wall combined, showcasing the advanced military and hydraulic engineering skills of the Sasanians. Despite its historical significance, substantial sections are now buried under the Caspian Sea.