just a couple miles down u.s. 41, however, is evidence that carlisle is anything but forgotten. >> it's 2 1/2 hours away from everywhere. it's just the middle of nowhere. what goes on out here? prison. that's what goes on out here. >> surrounded by little else but big skies, the wabash valley correctional facility houses more than 2,000 convicted felons, including some of the highest security prisoners in the state. it is a fortress among farms. >> we have a total of seven towers blanketing the entire facility, including one tower that's in the center of our south yard. we've got the two sets of fences all the way around the facility. the inner fence is a stun fence, it's a nonlethal stun fence. the outside fence another 14-foot fence covered with razor ribbon. shaker alarm on the motion detector.