ADX Florence in Colorado is America's only federal supermax prison, designed to hold some of the country's highest-risk inmates. Prisoners can spend 22 hours a day confined to their cells, with ...

Inside ADX Florence in Colorado, some of America's most notorious criminals endure up to 23 hours a day in isolation, with ...

Former Sinaloa Cartel “jefe” Joaquin Guzman aka El Chapo is currently serving a life sentence in Colorado’s ADX Florence Maximum security prison and prison officials recently translated a letter into ...

Joaquín "El Chapo" Guzmán's notorious story is back in the spotlight. Today, El Chapo is serving a life sentence at ADX Florence in Colorado, a facility Reuters has described as the most secure ...

Eric King served almost two years at the federal super-maximum security prison ADX Florence in Colorado.

Another year has come and gone, and there they sit, four federal prisoners in tiny jail cells at ADX-Florence in Colorado -- the so-called "Supermax" facility known to the world as America's most ...

Add Yahoo as a preferred source to see more of our stories on Google. By Alex Dobuzinskis (Reuters) - Joaquin "El Chapo" Guzman, the Mexican found guilty in a U.S. court on Tuesday of running a ...