is fast approaching its explosive crescendo – but, before everything kicks off in episode 7, its predecessor has come bearing gifts in the form of some fascinating Middle-earth lore. Season 2 episode 6, titled 'Where Is He?', continues to ramp up the tension ahead of next week's brutal Siege of Eregion, aka this season's tentpole battle sequence. Amid the multiple storylines explored in 's latest entry, though, a suspense-filled scene between Galadriel and Adar contains some compelling historical references to Middle-earth's First Age.

Intriguingly, the lore dropped by Adar has ties to Sauron and Celebrimbor, too, whose as season 2 of the hit show reaches its endgame. But enough dawdling. As long-time fans might have deduced, I am talking about the Silmarils and Morgoth's crown – the former being mentioned by name by Adar during his chat with Galadriel, and the latter showing up once more after its initial appearance in season 2's opening episode.

What are the Silmarils and why are they so important in The Lord of the Rings? There's a of background information on the Silmarils, so much so that I could dedicate an entire feature's worth of writing to them. But, while they're hugely important items that shaped the very history and topography of Middle-earth, I'll refrain from going off-track. So, what are the Silmarils? Created by Celebrimbor's grandfather Fëanor, who's considered to be the greatest elven-smith to ever live (much to Celebrimbor's chagrin) during the First.