“Yellowstone” went to the train station.

After five seasons, the hit cowboy drama “Yellowstone” ended on Sunday night – well, probably.

Season 5 was supposedly the final season. However, it was reported on Wednesday that stars Kelly Reilly and Cole Hauser have inked deals to lead a spin-off show about their characters, married couple Beth and Rip.

In August, several media outlets also reported that a sixth season was in the works, but Paramount never announced or confirmed this. According to reports, the Beth and Rip show will be a separate spin-off series and not a sixth season of the main series.

“Yellowstone” star Ian Bohen coyly told The Post that “it’s not necessarily” the end.

Still, this is the apparent series finale. At the beginning of the oversized episode, the main questions that had to be answered were what will happen to the ranch, whether Beth will kill Jamie and whether John Dutton will finally be laid to rest. All of these questions have been answered.

Series stars Wes Bentley and Luke Grimes told The Post that the ending would be “heartbreaking.” Were they right?

Spoilers ahead for the fifth season finale of “Yellowstone,” “Life Is a Promise.”

Created by Taylor Sheridan, “Yellowstone” follows the Dutton family, owners of the largest ranch in Montana. The focus is on patriarch John (Kevin Costner), who was also governor before his death, and his adult children Kayce (Luke Grimes), Jamie (Wes Bentley), Beth (Kelly Reilly) and Beth’s husband Rip (Cole Hauser).

Costner left the series after the first half of season five when rumors of a feud with Sheridan began to emerge. The series dealt with his absence by killing John in a hitman attack that initially appeared to be a suicide – but now everyone knows it was a murder. Jamie, Montana’s attorney general, was partly involved in his father’s murder, even if he was not directly involved.

In the finale, Kayce sells the ranch to Thomas Rainwater (Gil Birminghan), the leader of the local Indian community who was sometimes John Dutton’s enemy, sometimes ally.

Kayce tells Rainwater, “When my ancestors came here, land sold for twenty-five dollars an acre, back when it was your land. That’s the price I’m offering you.”

His condition is that Rainwater can never develop or sell the ranch, and Kayce and his family are allowed to stay in East Camp, the area where he lives with his family.

Rainwater agrees to buy the ranch for $1.25 an acre and says, “Congratulations, you just made the worst land deal since my people sold Manhattan.”

The family holds a small private funeral for John Dutton and buries him at the ranch. It’s just the family (minus Jamie) and the cowboys.

Beth whispers to her father’s coffin: “You made me promise not to sell an inch, and I hope you understand that I have to keep it.” There may be no cows, but there are no condos either. We won.”

She also whispers a promise that she will avenge John.

Rip lowers John’s coffin into the ground himself – even though the priest tells him, “We have people who do that.” And Rip promises John’s grave that he will take care of Beth.

Later, Beth races her car to Jamie’s house. Rip realizes where she is going and pursues her in his own car, but she has a head start. Rip threatens to call Kayce, but Beth snaps, “Keep Kayce out of this.”

When Jamie gets home, he doesn’t realize Beth is in his house and she attacks him unexpectedly. Their fight is dirty and vicious. As the siblings brutalize each other, Jamie eventually gains the upper hand and appears as if he will kill Beth. He’s on top of her, blood dripping from both of them, his hands around her neck as she gasps for air. (However, tension is minimized for the viewer since we know Beth will survive to appear on her spin-off show.)

Rip finally catches up with Beth, storms into the house and drags Jamie away. While Rip holds Jamie, Beth fatally stabs Jamie in the chest, keeping her promise that she would be the last thing he would ever see.

Rip worries about what they should do with Jamie’s body, but Beth says she’ll call 911.

“We don’t have to hide it, it’s part of the plan,” she explains.

When the police arrive, the injured Beth makes up a story that pins everything on Jamie. The death destroys Jamie’s reputation. A local news reporter announces that he has a domestic violence charge against him (due to his fight with Beth) and that impeachment proceedings are being initiated against him in an attempt to oust him as Attorney General.

Beth also tells Rip that she bought them a ranch so they will have a fresh start. When they go there at the end, a happy Rip comments, “The grass here is good,” while Beth makes fun of cowboys for being the only people who “get excited about weed.”

As Rainwater and his people take control of the ranch and ensure it returns to its natural wildlife state, they ensure that the Dutton family graves, including John’s headstone, remain in place.