The special effects behind Game of Thrones' epic White Walker battle

The VFX in Game of Thrones is consistently great for a TV show , with some scenes rivaling the very best of any visual medium. And this past season's battle (or massacre) at Hardhome between the White Walkers and wights vs The Night's Watch and the wildlings might very well be the best we've seen. At the very least, it's the most visually impressive battle scene the series has given us given all the moving parts. Here's how they made it.