PHOTO: This is what 'Game of Thrones' dragons look like fully-grown, says George RR Martin's 'World of Ice and Fire' [SPOILERS]

George R.R. Martin this week released an excerpt from his companion book to his widely popular A Song of Ice and Fire series entitled The World of Ice and Fire: The Untold History of Westeros and the World of Game of Thrones. Lengthy name aside, his new work from the author gives us takes us deeper into the world of HBO's hit series Game of Thrones, showing off more of Martin's imagination. Oh and he also shared an artist's depiction of a fully-grown dragon!

Though we would've been completely fine with the picture of the dragon, the excerpt posted on Martin's website gives fans a bit of background on Daenerys Targaryen. Specifically, we learn more about her ancestor Aegon I Targaryen and his conquest of Westeros.

Check out a portion of this excerpt right here:

Aegon Targaryen's conquest of the Seven Kingdoms did not take place in a single day. More than two years passed between Aegon's landing and his Oldtown coronation . . . and even then the Conquest remained incomplete since Dorne remained unsubdued. Sporadic attempts to bring the Dornishmen into the realm continued all through King Aegon's reign and well into the reigns of his sons, making it impossible to fix a precise end date for the Wars of Conquest.

You can read the entire exceprt from the companion book over at Martin's website, plus you can check out the awesome picture of the fully-grown dragon as the author imagined it! Click here to check all of this out!