Making an undead army of over 100,000 isn't an easy job but thankfully for the guys at El Ranchito, a Spain-based visual effects company responsible for the action in 'Beyond the Wall', had plenty of time and a lot of raw parts to help them along.
And while the jury may be out on the writing and overall plotting of season seven of 'Game of Thrones', you can't say it didn't look good.
