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Basically, if you're a big fan of the world of Middle Earth and were expecting a lovely show in which all of your favourite characters were there and having a nice time, you're probably in for a shock.
To be fair, most serious Lord of the Rings fans know that the world created by J.R.R. Tolkien is so vast and detailed that this was never likely to be the case. However, we now might have a couple of pointers as to the scope of the subject matter.
It had been suggested that the new series - which is already the most expensive series ever produced at over $250m - could follow a young Aragorn on his way to becoming a ranger, which in turn leads him to become the King of Gondor and the leader of the race of men.
That's not going to happen, though, if some pictures posted by the show's official Twitter account are to be believed.
The account shared a photo of a map of Middle Earth, with the famous inscription from the One Ring.
It said: "One Ring to rule them all, One Ring to find them, One Ring to bring them all, and in the darkness bind them, In the Land of Mordor where the Shadows lie."
So far, so normal.
However, they then shared a second tweet that said 'Welcome to the Second Age'. That tweet took anyone who deigned to click through to an interactive map of Middle Earth. Well, this era of Middle Earth.
Even if you're not mad into it, have a look. It's cool.
The Second Age refers to an era in the Tolkien-verse that occurs a long time before the events of Lord of the Rings. In fact, it's even significantly before The Hobbit takes place.
We know this because of certain things that are mentioned on the map (as well as all the Second Age schtick) such as Minas Ithil and Minas Anor. Fans of the films and books might remember them by different names - Minas Tirith and Minas Morgul.
Oh, and there is also a mention of the dwarven city of Khazad-Dun. That was taken over by the Balrog (remember that happy character?) in the Third Age. Get the idea?
Anyway, those first two names are the relevant ones here. Both were destroyed a long time before the events of the novels.
Anyway, we have all the time in the world to figure it out. It's still really early days for the show and we'll be unlikely to find out anything of real note soon.
If it all goes to plan, the earliest that we'll see it will be around 2021.
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