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Wikimedia Commons has
media related to Caracalla.
Kettenhofen,
Erich (1990). "CARACALLA".
Encyclopaedia Iranica, Vol. IV, Fasc. 7....
-
northern gate to the city
Section of the "mountain wall" of Dagh-Bary
Kettenhofen 1994. "DERBENT: What
Persia Left Behind".
Derbent Online. "Derbent; What...