I once saw a documentary on prisons and at the time, as I recall, ADX wasn't quite ready to accept prisoners but the narrator was saying prisoners would be deprived of contact with other prisoners, and views of the outside. I don't know how true this is, or whether they have softened their policy but from what I can remember that place looked mighty intimidating. In the "Vinnie Gorgeous" book the author described VB's cell and I think it would be hard to keep your sanity in that place