What is Hell?
Hell is the eternal state of punishment for mortal sin. Hell's greatest punishment is being separated from God's grace. The existence of Hell is proven in the Bible. Hell is believed to be an abyss with fire. Hell to many is the home to demons and other evil supernatural creatures.
     "The poena damni, or pain of loss, consists in the loss of the beatific vision and in so complete a separation of all the powers of the soul from God that it cannot find in Him even the least peace and rest. It is accompanied by the loss of all supernatural gifts, e.g. the loss of faith."
                                                                                        http://www.newadvent.org/cathen/07207a.htm