The far edges of the known world

When Ovid was exiled from Rome to a border town on the Black Sea, he despaired at his new bleak and barbarous surroundings. Like many Greeks and Romans, Ovid thought the outer reaches of their world was where civilisation ceased to exist. Our fascination with the Greek and Roman world, and the abundance of writing that we have from it, means that we usually explore the ancient world from this perspective too. Was Ovid's exile really as bad as he claimed? What was it truly like to live on the edges of these empires, on the boundaries of the known world?