Yep, we're talking about the same concept. The nature of punishment described in the Gospels seems to fall in line with the idea of hell; unquenched fires and what not. I believe Jesus has a parable where he consigns unbelievers to eternal fires (in Matthew?). I'm also fairly certain that the word Tartarus is used in the New Testament to describe the torments that await unbelievers. Now, it is possible that the Catholic church advanced those teachings to the forefront, and that's not something I can really comment on, as I'm not really a student of Christianity. Of note, in talking to Eastern Orthodox Christians, a couple of them contend that Jesus didn't die to save people from eternal torment, but from death itself. I didn't understand what they meant, and one guy even tried to explain it, but it was a little difficult to follow. By the way, the Valley of Hinnom is...eh...just a valley to me, but it is most definitely just a valley.