Ab urbe condita

Titus Livius (Livy)

Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.

It was situated where Narnia now stands, on high ground which on one side was steep and precipitous, and it was impossible to take it either by assault or by regular siege works.