ranch
About the
Ocile and Martin Portmann (“Port”) purchased the Diamond P Ranch in 1954, as an original 1890s homestead during the establishment of Yellowstone National Park. The ranch, still owned by the Portmann family today, is operated by Rex Portmann and his wife Denise, carrying on the legacy of his mother Ocile.
In addition to the abundant wildlife that inhabit this land, the Diamond P Ranch is uniquely located in the middle of two important historic trails with historic structures still standing on the ranch today: The Nez Perce National Historic Trail and the Historic Monida and Yellowstone Stage Line.
-
As the only outfit permitted to offer guided horseback rides in the Gallatin National Forest, West of Yellowstone on Hwy 20, we provide unrivaled experiences in horseback riding through mountainous terrain and incredible views overlooking Yellowstone and beyond.
Yellowstone & Horses
legacy
The Portmann family
Legacy is the reason visitors from around the world are able to descend from Idaho and Montana, through Targhee Pass, and enter Yellowstone National Park through a beautiful meadow filled with legendary trout waters, wild flowers, and wildlife. This land has been preserved with vigilance, and we are determined that greedy interests will not overtake this ranch or erase its rich history, beauty, and cherished memories.
One woman,
an enduring vision.
Ocile Portmann had a love for horses, nature, and living a simple life in West Yellowstone. She was devoted to her family and also to the wranglers that worked at the ranch. At a time when men were predominantly the head, Ocile took charge with a gentle confidence that earned the respect of her community, visitors, and those that worked on her ranch.
Ocile had a simple and beautiful dream, but one that is constantly under threat today––to preserve the ranch forever, so visitors can explore Yellowstone Country on horseback, the same way it was traveled during the discovery of Yellowstone National Park and the flight of the Nez Perce Indians, led by Chief Joseph.
-
Surviving off the land, everyone on the ranch hunted and gathered for food, raised cattle, and guided tourists on horseback through Yellowstone country––often times encountering grizzlies.