From the Boston Globe

Colorado prison ‘a high-tech version of hell’
An excerpt from The Boston Globe article

In a sworn statement as a part of a separate lawsuit filed against the Bureau of Prisons in 2011, Thomas Silverstein , who has spent more than three decades in solitary confinement after killing a guard at another federal prison, testified to the deprivation of going years without seeing “a single tree, a blade of grass, or any sign of nature.”
He described the outdoor recreation area at the ADX — where he can take 10 steps in either direction and 30 steps if he walks in a circle — as similar to standing “inside of a deep, empty swimming pool.”
“I couldn’t see any of the mountains, even though I knew they had to be close by,” he said.
He added: “Other than infrequent haircuts, strip searches, and medical examinations, the only physical human contact I have experienced in 28 years is when BOP officers handcuff me and escort me.”