The Roman History · Amm. 22.15.30

There are also subterranean passages, and winding retreats, which, it is said, men skilful in the ancient mysteries, by means of which they divined the coming of a flood, constructed in different places lest the memory of all their sacred ceremonies should be lost. On the walls, as they cut them out, they have sculptured several kinds of birds and beasts, and countless other figures of animals, which they call hieroglyphics.

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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