What Is Life Like in ADX Florence Supermax Prison?

Life in ADX Florence supermax prison means spending 22 to 24 hours a day alone in a concrete cell about the size of a parking space, eating every meal through a slot in the door, showering inside that same cell, and exercising for one hour a day by yourself in a walled concrete pen open to the sky. ADX Florence is the only federal supermax in the United States, sitting on 37 acres of Colorado high desert roughly a hundred miles south of Denver, and it holds around 400 men who have been judged too dangerous for any other federal prison.

The Cell

A standard ADX cell measures about 7 by 12 feet. Nearly everything inside is poured concrete and bolted down: a bed frame with four-point restraint hardware, a desk shelf, a stool, and a small bookshelf. The toilet-and-sink combination and the shower are stainless steel, and the shower uses a timed valve to prevent flooding. Nothing in the room can be pried loose and turned into a weapon. Even the pens sold in the commissary are short rubber tubes that hold ink but cannot be sharpened.

The window is the detail former inmates tend to describe first. It is a slit roughly four inches wide and about 42 inches tall, cut through thick concrete at an angle that admits natural light but blocks any view of the ground, the horizon, or neighboring buildings. You see a narrow strip of sky and part of the prison’s own roof. You cannot tell where you are inside the complex, you cannot judge the hour by the sun, and you cannot see another human being from your cell.

Inmates in good standing can earn a small television and a radio. The television carries mostly religious and educational programming, including church services broadcast to the cell because physical congregation is not permitted. The radio picks up only internal prison-operated stations. Both are privileges and can be revoked for any disciplinary infraction.

A Day Inside

Breakfast, lunch, and dinner arrive through the food slot on a fixed schedule. There is no cafeteria and no shared dining of any kind. You eat alone. You shower alone, inside the cell, using the timed unit.

Recreation is one hour a day in a concrete enclosure sometimes called a dog run. The walls are high and the top is open, so daylight comes in, but the layout is intentionally disorienting; you might take ten steps in a straight line before hitting a wall. There is no equipment, no grass, and no contact with other inmates. For those housed in general population units rather than the most restrictive tiers, the Bureau of Prisons allows up to two hours of out-of-cell time on weekdays, though that still happens in isolation or under heavy supervision.¹

The rest of the day is yours to fill from inside a 7-by-12 room. Reading is common. Writing with the rubber pens is possible. Push-ups become a way to structure the hours. The Bureau makes some correspondence courses available, including GED preparation and English-as-a-Second-Language materials, with access depending on housing level and behavior status. A cognitive behavioral therapy program called Resolve is offered for inmates with trauma-related mental health needs.²

Not Every Inmate Lives the Same Way

Conditions vary across six housing tiers, and where you fall in that hierarchy shapes everything.¹

Range 13 is a four-cell wing of the Special Housing Unit and the most isolated space in the facility, reserved for inmates considered dangerous even by ADX standards.
The Control Unit, or Bravo Unit, keeps inmates isolated at all times including during recreation, locked down 23 to 24 hours a day. Behavior is reviewed monthly, and a single incident resets the clock.
The Special Security Unit, or H Unit, houses inmates under Special Administrative Measures, typically those with terrorism connections or gang leadership roles where communication itself is treated as a threat.
General population units, Delta through Golf, run on similar restrictions but allow up to two hours of out-of-cell time on weekdays. Inmates are still alone in the cell at least 22 hours a day.
Step-down units, Joker Unit and Step-Down Bravo, are transitional. The first time an ADX inmate interacts with another inmate without restraints happens in Joker.
Kilo Unit is the least restrictive tier and primarily houses high-profile inmates placed at ADX for their own safety. Eligibility requires no history of staff assaults and three consecutive years without a disciplinary incident.

Contact With Family and the Outside

ADX permits five social visits per month, each lasting up to seven hours. Every visit is non-contact, through glass, in isolated rooms. Any portion of a visit counts as one of the five, and unused visits do not carry over.³

Standard Bureau of Prisons telephone policy allows inmates with commissary accounts up to 300 minutes of calls per month, with individual calls capped at 15 minutes. Inmates in the Special Housing Unit, the Control Unit, or protective custody may be excluded from even that baseline. All calls are monitored and recorded.⁴

Special Administrative Measures

Inmates in H Unit under Special Administrative Measures face a far more extreme version of these rules. Phone access can drop to a single 15-minute call per month, made only to approved immediate family and monitored in real time by the FBI, who can terminate the call without warning if the conversation touches prohibited topics. Mail is limited to three pages per week to a single approved recipient, copied and analyzed by the FBI before delivery. If a translation is needed or code is suspected, a letter can take 60 days to arrive. All contact with the media is prohibited, and anyone granted access to a SAMs inmate is barred from repeating that inmate’s words to any third party.

Medical and Mental Health Care

The medical department at ADX runs with a small staff: one physician, two paramedics, one staff nurse, and one infection-control nurse. Lab work and optometry are handled by outside contractors. Inmates request care by submitting a sick call slip, and staff have acknowledged that non-urgent issues can take weeks to address, while urgent concerns are seen immediately. Open-house hours run on Mondays and Wednesdays for inmates with a sick call slip.⁵

Medication is distributed twice a day during pill line rounds, with inmates required to show physical identification. In the Special Housing Unit, nurses bring medication to the cell. Some medical and mental health consultations are conducted by teleconference rather than in person, a practice that drew criticism from oversight organizations and sat at the center of the facility’s major class-action lawsuit.

The Cunningham Settlement

In 2012, five inmates and Disability Law Colorado filed Cunningham v. Federal Bureau of Prisons, alleging that holding seriously mentally ill inmates in extreme isolation without adequate screening, diagnosis, or treatment amounted to cruel and unusual punishment under the Eighth Amendment. The case settled in December 2016. The Bureau agreed to three-stage mental health screening (before transfer to ADX, upon arrival, and after a period of confinement), to either transfer inmates with serious mental illness to a more appropriate facility or treat them at ADX when security needs required it, and to lift a longstanding ban on prescribing psychotropic medication in the Control Unit. The Bureau also agreed to build confidential therapy spaces so inmates would no longer be counseled while shackled and surrounded by guards.⁶

Mental health staffing at the facility has more than doubled since the litigation began, and two independent physicians now oversee the programs to monitor compliance. The underlying architecture of the place, cells designed to keep a person alone 22 or more hours a day, has not changed.

The Psychological Toll

Prolonged isolation does predictable things to the mind. Former ADX inmates have described talking to themselves, losing the ability to track time, experiencing hallucinations, and reaching a point where self-harm felt like the only way to confirm they were still alive. Some inmates cut off parts of their own bodies. Others swallowed razor blades, broken glass, or pieces of their radios. Some killed themselves. Others who attempted suicide were punished for it.

The United Nations Nelson Mandela Rules, updated in 2015, define solitary confinement as holding a person for 22 hours or more a day without meaningful human contact, and classify any such confinement lasting more than 15 consecutive days as a form of torture. By that standard, nearly every housing tier at ADX, from the Control Unit through the general population wings, meets the definition. A 2020 UN review specifically found that prolonged solitary confinement in U.S. federal prisons amounts to psychological torture.⁷

Getting Out: The Step-Down Program

ADX was designed, in theory, to give inmates a structured path out. The Step-Down Program is a roughly two-year, four-phase process:¹

Phase 1 requires one full year of clear conduct before an inmate can even enter the formal program.
Phase 2 is about six months in the Joker Unit, where inmates have their first unrestrained contact with other people. A multidisciplinary committee reviews each inmate at least every six months.
Phase 3 moves inmates to the adjacent high-security penitentiary, USP Florence-High, with three hours of daily out-of-cell time and 300 phone minutes per month.
Phase 4 keeps inmates double-celled for at least six months with more out-of-cell time and access to GED programming. Completing it can open the door to transfer to a standard federal prison.

The paper timeline is deceptive. Phase 1 alone demands twelve months of perfect behavior, and a single incident resets the count. Many inmates cycle between tiers for years, and some have been at ADX for over a decade. The two-year program and the time people actually spend inside are very different things.

1
Corrections Information Council. USP Florence Administrative Maximum Security (ADX) Inspection Report
2
Federal Bureau of Prisons. First Step Act Approved Programs Guide
3
Federal Bureau of Prisons. Visiting Procedures – USP Administrative Maximum Facility Florence, Colorado
4
Federal Bureau of Prisons. Program Statement 5264.07 – Telephone Regulations for Inmates
5
Corrections Information Council. Report on Findings and Recommendations USP and ADX Florence 2023
6
U.S. District Court for the District of Colorado. Cunningham v Federal Bureau of Prisons – Order Approving Settlement
7
United Nations Office of the High Commissioner for Human Rights. United States – Prolonged Solitary Confinement Amounts to Psychological Torture