The limes – the northern borderline of the Roman Empire stretched from Britannia to the Black Sea.
In its golden age, the antique global empire comprised an area as large as the United States today. It stretched from Scotland to Sudan and from Spain to the Caucasus.
The Roman army, which counted more than 300,000 men, had to defend a frontier that was approx. 5,000 km long.
But only in the north of the Empire, at the boundary line to Britannia and Germania, the frontier was continuously fortified and extended. What did that mean? Were the powerful Romans actually afraid of their Barbarian neighbours?
What did this border really look like?
And how was this huge borderline actually formed?