Watch how stop-motion artists brought AT-ATs to life for the Battle of Hoth

The Verge: Computer-generated lightsabers, laser blasts, and aliens may have filled the Star Wars prequels, but the original trilogy featured some stunning practical effects that still stand up today. On YouTube, Star Wars has posted an old behind-the-scenes video of how the filmmakers made one of the series' most impressive effects: the AT-ATs moving at the Battle of Hoth. The video shows time-lapse footage of animators adjusting large AT-AT models frame-by-frame, while Industrial Light & Magic effects artist Dennis Muren explains how they planned out the shoot.