This map was actually made by Governor Jon. He sent it to me to play on stream. I was thoroughly pummeled by the map, hopefully you have better luck than I did!
Caesar includes the following message with the assignment.
Ah, Salve Governor.
Your persistence is nothing short of a marvel, no matter how many times
you're banished you manage to swim back into the Empire. Quite remarkable.
I see you have drifted ashore in the dismal lands of Britannia, at a location
the natives refer to as 'Grimsby'. Charming.
Still, I hear the area is good for fishing, I trust you will make yourself useful
there. Establish a colony and fulfil the Empire's insatiable appetite for garum.
Beware though, the legates in the region say that the natives are quite feisty.
Try not to disappoint me.