Game of Thrones co-director Matt Shankman says dragons will be the size of jumbo jets in the forthcoming seventh season.
"The dragons this year are the size of 747s," ew.com quoted Shankman as saying.
He added: "Drogon is the biggest of the bunch - his flame is 30 feet in diameter!"
Shankman is one of four directors helming next season (the others are Alan Taylor, Jeremy Podeswa and Mark Mylod).
The seventh season of the popular fantasy drama series Game of Thrones will premiere on July 16. It will be back in India on Star World, Star World HD and Star World Premiere HD. The final season likely will air in 2018.