Kelati Nadiri

Kelati Nadiri, one of the strongest natural fortresses in the world, in the Persian province of Khorassan, and close to the Russian frontier of Transcaspia. It was raised by Nadir Shah as a defence against the Turkomans upon an elevated valley in the Hezar Musjid Mountain, and shut out from external communication by lofty hills with precipices of 300 to 600 feet. Owing to Russia's schemes upon Khorassan, Kelati Nadiri has recently gained considerable importance.