Game of Thrones Season 7: Did The Trailer Confirm a New Setting?

We're taking a closer look at those scenes of Casterly Rock from the Game of Thrones Season 7 trailer...

There was a lot to unpack in the Game of Thrones Season 7 trailer, but perhaps the most exciting and unexpected sneak peek came in the form of what seems to be a glimpse of Casterly Rock, aka the home of the Lannisters.

As we can clearly see in several shots from the trailer, Dany’s forces are attacking a sunny stronghold awash with the Lannister sigil. Many (including Den of Geek) have speculated that the locale is, indeed, Casterly Rock.

This is major Game of Thrones news because we have yet to see Casterly Rock in the show, aside from a Season 5 flashback that shows a young Cersei getting a terrible prophecy from a fortuneteller who lives near her home. Casterly Rock hasn’t gotten a lot of play in the A Song of Ice and Fire books as of yet, either.

Casterly Rock, nicknamed the Rock (not to be confused with Dwayne Johnson), sits on the western shore of Westeros and once belonged to the Casterlys (hence the name) before the Lannisters tricked them out of it a long time ago. Classic Lannister.

The Rock is said to be three times the height of The Wall and is in the shape of a lion in repose. It overlooks the harbor of Lannisport and Sunset Bay, which might explain why some of the battle scenes in the trailer show a nighttime sea battle as well as a daytime land battle. Are Dany’s forces attacking Casterly Rock from two sides or are these two separate battles? We’ll have to wait and see.

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Deep within the Rock are cages where lions were once kept. Perhaps they might find another use if the Lannister force is able to capture one of Dany’s dragons? Whatever we do or do not get to see of Casterly Rock, we’re just excited that the locale may be getting a focus in Season 7 — another check in the “pro” column for the TV show passing the narrative point of the books.