The gorge of Iron Gates on Vardar (Axios) river.
The Vardar entering the Demir Kapija Defile. (On the right bank, a railway tunnel.)
FALLS, Cyril Bentham. Military Operations Macedonia from the outbreak of war to the spring of 1917. [... From the spring of 1917 to the end of the war], vols. Ι-ΙΙ, London, HMSO, 1933-35.
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