Constructed in 1871 behind imposing, red-brick walls, the Montana Old State Prison stands as a severe, fortress-like landmark defined by century-long overcrowding, bloody inmate rebellions, and violent paranormal activity. Functioning as the state’s main high-security penitentiary until its retirement in 1979, the facility earned a reputation for brutal discipline and grim living conditions. The absolute flashpoint of the prison’s bloody timeline occurred on April 16, 1959, when an armed inmate riot erupted. Led by inmates Jerry Myles and Lee Smart, the rioters seized control of the complex, brutally murdered Deputy Warden Theodore “Ted” Rothe, and held hostages in a tense 36-hour standoff that only ended when the Montana National Guard stormed Cellhouse 1 using bazookas, dynamite, and heavy gunfire.

The primary focus for overnight investigators—including teams featured on Ghost Adventures and Ghost Files—centers on the Maximum Security Cellblock, the underground tunnel system, and the death house gallows. Guests participating in the museum’s private investigations routinely document intense, physical encounters inside Cellhouse 1, where Deputy Warden Rothe was executed. Visitors frequently report hearing the distinct, jarring sound of heavy steel cell doors slamming shut on their own, accompanied by disembodied shouts, the echoing sound of frantic running footsteps down the iron catwalks, and full-bodied shadow figures pacing the upper levels.

The subterranean transit tunnel beneath the compound—used historically to move high-risk inmates between blocks—hosts some of the most aggressive, sensory anomalies on the grounds. Explorers traversing the dark passage report an immediate, suffocating sensation of weight on their chests, icy localized drafts that defy the ambient temperature, and distinct disembodied whispers echoing off the bare stone walls. The severe, lingering trauma across the maximum-security wards remains intensely hostile to modern electronic equipment, causing rapid battery failure and sensor blackouts on thermal and digital recording arrays.