Game of Thrones: This theory about The Wall and Sam is very intriguing

Winter is here.

If you're one of the two people in the realm that aren't up to date with all things Game of Thrones, look away now. Final warning because we don't want you to be grumpy at us after discovering a potential spoiler below.

Ok, so the most recent season has come to a thrilling climax with the wonderful double-bill of 'Battle of the Bastards' and 'The Winds of Winter' but fans still have so many questions to be answered.

We've already provided a few of our theories and hopes for Season 7 but one of the most pressing issues concerns The Wall, especially with the ever-increasing threat that's posed by the White Walkers.

Many of you will know the theory that's being widely circulated at the minute. It concerns Bran and how that fatal touch from the Night King could negate the protective spells that surround The Wall, just like the scene when the Three-Eyed Raven's lair was breached by the White Walkers.

While this may still come to pass, another theory has been proposed that seems equally plausible. Do you remember the scene in Season 2 when Sam and his fellow Night's Watch members discovered a cache of weapons that were made of Dragonglass, buried in the snow beyond The Wall?

This snap might jog your memory.

Some people believe that this horn could be the same one that's being used on the cover of George R.R Martin's highly-anticipated next installment in A Song of Fire and Ice, The Winds of Winter.

What does this all mean then? Ok, right now in the show, Samwell Tarly has finally reached the Citadel at Oldtown as he studies to be a Maester. In George R.R. Martin‘s books, the horn that Sam discovered beyond The Wall is believed to be the Horn of Winter (or the Horn of Joramun). The legend goes that this has the power to bring down The Wall when blasted.

In the novels, Euron Greyjoy (Theon and Yara's demented uncle who became the newly proclaimed King of the Iron Islands after some mischievous fratricide) raids Oldtown - the city where Sam is currently spending all of his time studying.

While the show and the books do differ, if this happens then it's safe to assume that Euron is probably going to steal Sam's prized possession.

Book readers will also know that in the novels, Euron's brother Victarion is currently in possession of a different horn, Dragonbinder - an instrument that has the potential to tame dragons.

We know nothing about the direction that Benioff and Weiss are going to take with the show but Euron Greyjoy might be about to have a very prominent role regarding the future of The Wall or Daenerys Targaryen and her dragons.

April can't come quickly enough.