You know the rules to this game, you know who won previously and all that. All you have to do is say where this archaeological site is and what date it is (it's not a site I've mentioned here as a portable antiquities issue).
The colours really are like that, I think that's rather pretty, isn't it? Phil Barker always used to argue that archaeology is a very 'visual' discipline. There is an excavation going on in the upper right. That's the open sea by the way in case you could not tell.