Colorado prison ‘a high-tech version of hell’ . The Colorado Supermax prison houses the worst of the worst among federal inmates, most in utter isolation. Dzhokhar Tsarnaev may soon call it home.

The Boston Globe reports:

What distinguishes the ADX, as it’s known, from other federal prisons is that it was designed for solitary confinement. Many of the more than 400 prisoners are required to spend 23 hours a day alone in their 7-by-12-foot concrete cells, where they receive all their meals on trays slid through small holes in the steel doors, see limited natural light from a sliver of a window, and are permitted little contact with anyone other than guards and staff.

When prisoners are allowed out of their cells, they are escorted by multiple guards and are required to wear leg irons, handcuffs, and belly chains. Their recreation hour is usually spent in a small outdoor cage, which is surrounded by high gray walls with a view of the sky etched by barbed wire.

Prison.