The Caspian Gates Today

Identified with the Tang-e Sar-e Darreh , located roughly 50 miles (82 km) east of the ancient city of Rhagae (modern Ray, south of Tehran).

In the strictest historical sense used by Greco-Roman authors, the Caspian Gates (ancient Caspias portas ) refer to a ground-level pass through the in modern-day Iran. The Caspian Gates

This pass was famously used by Alexander the Great in 330 B.C. during his pursuit of the Achaemenid king Darius III. Identified with the Tang-e Sar-e Darreh , located

Ancient writers like Pliny described it as a narrow, scorched-looking passage with salt water leaching from the rocks, a description that still matches the modern site's barren, eroded appearance. CASPIAN GATES - Encyclopaedia Iranica Identified with the Tang-e Sar-e Darreh