An exceptional 4,108± sq ft custom residence set on 20.72 acres in the heart of Cameron, Montana, offering commanding views of the Madison Range and private access to the Madison River via a non-public subdivision easement. Ideally positioned between Bozeman and Yellowstone National Park, this property captures the essence of refined Montana living. Solidly constructed and thoughtfully designed, the home showcases high-end appliances, premium finishes, and a seamless blend of rustic elegance and modern comfort. Expansive windows frame breathtaking mountain vistas, while vaulted ceilings, a statement fireplace, and an open-concept layout create a warm yet sophisticated atmosphere for both everyday living and elevated entertaining. The finished lower level with egress doors and windows offers flexible living areas ideal for a fitness space, bunkroom, media lounge, or guest retreat. A separate guest house with its own kitchenette and living area provides privacy for visitors or potential income opportunities. Outdoors, the property is equally impressive, with a greenhouse, mature landscaping, and a paved driveway that enhances both convenience and curb appeal. An oversized two-car garage offers ample storage for gear, supporting year-round recreation in the Madison Valley. Offered partially furnished, this turnkey opportunity allows for a seamless transition into Montana living. Just minutes from world-class fly fishing, elk habitat, expansive public lands, and endless outdoor pursuits, 115 Holding Pen Road presents a rare opportunity to experience privacy, luxury, river access, and proximity to Bozeman and Yellowstone National Park in one of Southwest Montana’s most coveted settings.