“Rob had made two movies, quiet intimate movies.

If you look atThe Lighthouse two dudes in a lighthouse.

And then suddenly, you have a big action-adventure film.

The Northman

Alexander Skarsgård stars as Amleth, a Viking prince out for vengeance against the man who killed his father and took his other, in ‘The Northman.'.Aidan Monaghan/Focus Features

No one had told Rob how to make a big action-adventure film in a conventional way.

It proved both an exhausting and inspiring experience.

“It’s an undertaking that is almost borderline insane,” Skarsgard says.

The Northman

Alexander Skarsgard as Amleth in ‘The Northman’.Aidan Monaghan/Focus Features

He continues, “Again, it demanded a lot of everyone.

Because if we were a split second too fast, we were not in frame.

A split second too slow, we were also not in frame.

So it was about finding that.

But I think everyone thought this was an absolutely insane idea, but also, it triggered everyone.

Everyone got really excited about telling a story in this way.”

The chickens and the horses, however, could not be reached for comment.

The Northmanhits theaters April 22.

With reporting by Nick Romano.