The Roman History · Amm. 26.7.12

And then, fearing similar attempts by Procopius, he blocked up the three narrowest entrances into the northern province; one through Dacia, along the course of the different rivers; another, and that the most frequented, through the Succi; and the third through Macedonia, which is known as the Acontisma. And in consequence of these precautions the usurper was deprived of all hope of becoming master of Illyricum, and lost one great resource for carrying on the war.

Ammianus Marcellinus · translated by C. D. Yonge · 1911 reprint
C. D. Yonge translation (preface dated February 1862); G. Bell and Sons, 1911; Project Gutenberg #28587
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