[2] Some part of the country is encompassed by the Caucasian mountains; for branches of this range advance, as I have said, towards the south. These districts are fruitful, comprise the whole of Iberia, and extend to Armenia and Colchis. In the middle is a plain watered by rivers, the largest of which is the Cyrus, which, rising in Armenia, immediately enters the above-mentioned plain, having received the Aragus,
1
which flows at the foot of the Caucasus, and other streams, passes through a narrow channel into Albania. It flows however between this country and Armenia in a large body through plains, which afford excellent pasture. After having received several rivers, and among these the Alazonius,
2
Sandobanes, the Rhoetaces, and Chanes, all of which are navigable, it discharges itself into the Caspian Sea. Its former name was Corus.