"Game of Thrones" Season 7 is coming. Casts and producers' filming is about to finish. With the upcoming most awaited series, more spoilers and speculations start to spill offset.

At the beginning of the Game of Thrones Series, Kit Harrington as Jon Snow have lived to defend his people against the undead army of the White Walkers by joining the Night's Watch. Recalling the previous season of the HBO series, the White Walkers was teased by Bran's visions followed by an emotional episode of The Door.

Now, speculations about the Army of the Dead, marching towards the south of the Wall arose. According to Watchers on The Wall fan site, there will be a giant set in the Season 7 that features green screens and an artificially frozen lake - something that signifies the presence of the dead. The frozen lake has been built in the Wolf Hill Quarry near Belfast.

Aside from the indicative setup of the scene which mainly involves the White Walkers, reports were claiming that around 300 extras were hired to play in the scene. The Game of Thrones crew has been known for their elaborate settings and long hours shoot.

The fan site, however, teased an intense Wolf Hill sequence which will be filmed for over a period of three weeks. According to Games Radar, GOT fans will be expecting a dynamic and elaborate sequence in the Season 7 because it will involve a massive clash with the White Walkers.

The North is currently under the reign of King Jon Snow and his half-sister Sansa Stark. With this, it seems like there will be an epic clash between Jon and the White Walkers. The Wall isn't the same structure that we saw before. According to some speculations, it will be used in scenes where Bran attempts to cross back the Wall to tell Jon about his ability. This will possibly break the protective spells which will allow the White Walkers to travel into the North.