[blam]

GGG Ping.

[colorado tanker]

It is a really beautiful area, but it must have seemed very cold and lonely in winter to the Romans.

I can't buy the idea of a customs barrier. No need for such an impressive stonework and so many troops to do that and I'm not aware of any area of the Empire where there was a comparable barrier for customs purposes, not even in areas that would have seen much more cross-border commerce such as Syria and Armenia.