Northern defensive wall of the city of Derbent ripped apart by a

Sasanian defense lines - Wikiwand

Andrey KORZHENKOV, Head of Laboratory of Paleoseismology and Paleogeodynamics, Dr. Habil. in Geology, Russian Academy of Sciences, Moscow, RAS

List of cities with defensive walls - Wikipedia

The Hadrian's Wall of the East. Derbent, the Causasus, and the edge of…, by Dewi Hargreaves 🏹

PDF) Traces of Seismic Activity in Architectural Monuments in Derbent, Dagestan

The Caspian Gates: History the Caucasus's Great Wall

List of cities with defensive walls - Wikipedia

Category:City walls - Wikimedia Commons

Defensive wall - Wikipedia

The walls erected during the reign of Kavād I