Fallen Mexican drug lord Joaquin "El Chapo" Guzman was locked up Friday at the ADX federal maximum security prison in the US state of Colorado, where he will spend the rest of his days. Guzman, the 62-year-old former co-leader of Mexico's feared Sinaloa drug cartel, was convicted in February of smuggling hundreds of tons of cocaine, heroin, methamphetamine and marijuana into the United States. In a New York courtroom on Wednesday he was sentenced to life in prison, and sent to the notorious supermax prison nicknamed the "Alcatraz of the Rockies." The most dangerous prisoners are allowed out of their small steel and concrete cell for only 90 minutes a day -- and they must wear shackles on their hands and feet.