Domhnall Gleeson found filming 'The Revenant' "tough as f**k".
The 32-year-old actor - who plays Andrew Henry, captain of the fur trappers - admits shooting the movie in -40 degree temperatures for eight months was the hardest conditions he's worked on, but thinks director Alejandro Gonzalez Inarritu's vision was worth it.
He said: "It was... what's the polite way of putting it? Tough as f**k.
"But that was the plan! He told us at the beginning.
"We were never going to be strolling from trailers to an air-conditioned studio.
"He told us we were going places where not many people would go and he was going to put us in it. And the film is absolutely better for it.
"He didn't do it because he wanted us to be uncomfortable. He did it because he knew the film would be better. It's a cliche but they don't make movies like this any more.
"I'd do it again. Sign me up."
And Domhnall admits conditions were just as tough on the crew because of the long hours they had to put in setting up for filming just 90 minutes a day, when the director felt the lighting conditions were at their best.
He added in an interview with Total Film magazine: "The crew had it very, very tough and the way you describe it is the way for actors, always.
"But we were in and out of water at minus whatever, all day.
"I would say on this film, everybody had it tough and some days the actors had it worse."