Fossil Butte Cemetery
Fossil Butte Cemetery is an old cowboy cemetery in Southern Wyoming's Great Divide Basin which was in use between 1864-1901. It is the cemetery that lies in the center of the 100-square mile Devil's Trap built by Samuel Colt. The railway lines were made of cold iron and at each of the points were five abandoned frontier churches to further ensure that it was demon proof. The Devil's Gate in Wyoming appears in the back of the cemetery in the guise of the Colt Mausoleum and it can only be opened by the Colt. After Jake Talley opened the crypt and released Azazel's demon army, the devil's trap surrounding the cemetery was broken.
Ash was able to discover the truth about the devil's trap surrounding the cemetery and told Dean about how he found something huge, but he hung up telling him that he needs to show him in person. Ellen also got a call from Ash, telling her to look in a warded iron safe in the basement of Harvelle's Roadhouse. Before Ash could tell them, Azazel showed up and burned the Roadhouse to the ground along with every hunter that was inside, including Ash, to safeguard its secrets.
Bobby told Sam and Dean that there were multiple demonic omens that have recently occurred at every point of the continental US, except for one place in southern Wyoming. After Ellen arrived at the Singer Salvage Yard, having been getting pretzels when the Roadhouse was destroyed, she showed them a map of southern Wyoming that Ash left in the safe with the locations of the frontier churches that were built by Samuel Colt. After discovering that Azazel was after something in the cemetery, Sam, Dean, Bobby, and Ellen headed out to stop him.
After being convinced to follow Azazel's plan in exchange for royalty, Jake Talley made his way to the cemetery to use the Colt to open the crypt when he was stopped by the group of hunters. Jake Talley used his psychic abilities to make Ellen turn her own gun to her head, threatening to make her fire is they don't lower their guns. They comply and allowed Jake to open the mausoleum. After Dean and Bobby turned the gun away from Ellen, Sam shot Jake Talley repeatedly until he was dead, however they had to take cover since the Devil's Gate had been opened unleashing hundreds of demons and spirits into the world. The resulting shockwave had destroyed the five churches surrounding the cemetery and the iron lines were broken, allowing the demons to escape into the world and Azazel to enter the cemetery. Sam, Bobby, and Ellen proceeded to seal the gates before any more demons come through. Dean was able to recover the Colt before the crypt was opened and realized that the last bullet is still in the chamber. After Azazel arrived, Dean tried to kill him with the gun but Azazel summoned it to his hand and telekinetically threw Dean onto a grave and Sam had been flung onto a tree when he rushed over to save Dean. Azazel, after taunting Dean about making a deal to bring Sam back to life after Jake killed him in Cold Oak, South Dakota, decided to kill Dean with the Colt, but John's spirit, released from Hell, was able to distract Azazel by ripping him out of his meatsuit. Azazel was able to wrestle John off of him and returned to his meatsuit, but it distracted Azazel long enough for Dean to retrieve the Colt and shoot Azazel in the heart with the final bullet, killing him. Bobby and Ellen were able to seal the crypt and they witnessed John's spirit look over Azazel's dead body, share one last moment with his sons, and finally pass onto Heaven. After killing Azazel, Dean leans over to his body and tells him "That was for our mom, you son of a bitch." They all leave leave the cemetery, leaving Jake's body and Azazel's meatsuit to rot.
Kubrick visits Gordon Walker in prison and tells him that the Devil's Gate was opened in Wyoming. He shows him a map of the railway lines surrounding the cemetery and he described it being as big as St. Helens.
In 1861, Samuel Colt appears to be working on the railway lines surrounding Fossil Butte Cemetery.
- The Great Divide Basin was seen on the map bearing the locations of the five churches. Despite the fact that the Great Divide Basin was seen on southeastern corner of Wyoming, Fossil Butte, which is a national monument, is on the other side of the state in southwestern Wyoming.
- Samuel Colt was seen working on the railroad lines in 1861 to surround the cemetery, but the dates on the entrance date it as far back as 1864. It can be assumed that the cemetery was placed there after the crypt was built to further conceal its secrets.
- Sunrise, Wyoming was revealed to be 20 miles away from where Samuel Colt was working on the railway lines by the postal road. The year that 6.18 Frontierland takes place in 1861, however Sunrise, Wyoming didn't exist until 1898.