Kevin Costner explains why he self-funded Western epic 'Horizon'

In the meantime, Costner said, “many Indigenous tribes thought maybe if they killed enough of them, they’d stop coming.”

They did not.

“We sometimes think of the West like Disneyland or Frontierland,” Costner said. “There was this movement across this country with salesmen trying to sell a place they have never been to. But it was a brutal march from sea to shining sea. There was this ultimate crushing of cultures that had been here for thousands of years on the backs of people who just wanted to build this America in a different way.”

He said he went out of his way to ensure women are prominent in “Horizon.”

“Women are a dominant part of this movie,” he said. “I have my gunfights. But the women are taking care of their families and trying to survive and stay clean.”

Costner, 69, has always been partial to the big screen, which is why he chose to release “Horizon” in theaters rather than turn it into a TV series for a streaming service. “It was meant for cinema,” he said. “You see horses running faster than you’ve ever seen. There are life-and-death moments. You get to see the rivers, the mountains. The character of America was in the land itself.”

As an actor, Costner doesn’t show up until the second hour of the three-hour movie. He plays Hayes Ellison, a likable but circumspect man who incidentally stops by Horizon, inadvertently gets involved in a murder and feels no choice but to help a woman who goes on the lam.

His relative late arrival in the film “was by design,” Costner said. “We’re just getting our stories going. This is our novel.”

Over the past three-plus decades, Costner has become synonymous with Westerns, solidified by his recent five seasons as John Dutton III on Paramount’s hugely popular drama “Yellowstone.” But he isn’t planning to come back to that show.

He posted on Instagram last week that while he called it a “beloved series,” his commitment to “Horizon” made it so he was “not going to be able to continue Season 5b or into the future” on “Yellowstone.”

Paramount said the second half of Season 5 will arrive in November without Costner.

In the meantime, early reviews for “Horizon” have been a mixed bag with a 49% Rotten Tomatoes score so far from critics. The consensus is Costner “doesn’t lack for ambition as he sketches this frontier saga across the widest of canvases, but ‘Horizon’s’ first chapter proves too diffuse in scope for it to satisfy as a self-contained endeavor.”

Early box-office pundits think “Horizon” will finish with between $10 million to $12 million in domestic revenue in theaters behind both “Inside Out 2″ and “A Quiet Place: Day One.”

Costner remains unfazed by the naysayers.

“I believe so much in my relationship with people who go to the movies,” he said. “They don’t always want to see the same things. I believe there’s room for all kinds of stories. An American Western will touch people.”

If you go

“Horizon: An American Saga,” in theaters June 28.