‘It’s torture’: prisoners’ letters expose subterranean Oklahoma ‘dungeon’ known as the tombs

Exclusive: Letters from inside the underground H Unit of Oklahoma state penitentiary allege beatings, vermin, degrading punishment and in many cases no access to a most basic necessity – natural light“Down here in the tombs, there aren’t any windows,” writes Tremane Wood from inside his cell, in a modern-day American “dungeon” that few people have ever heard of.“It’s really like living in cave,” he writes in another letter. “It’s dark and damp. Sometimes this place drives people mad. The hardest part is the isolation.”