A cavernous lake of fire, within the earth's center.
Go here to listen to the lost souls rave about it:
It's like being burned alive at a rock concert... for eternity!
All joking apart, this Hell link video scared the daylights out of me because it is as I have been taught all my life in the Catholic Church.
'In the same instant also was decreed the creation of the empyrean heaven, for the manifestation of his glory and the reward of the good; also the Earth and the heavenly bodies for the other creatures; also in the centre or depth of the Earth, hell, for the punishment of the bad angels….…. God created the Earth co-jointly with the heavens in order to call into existence hell in its centre; for, at the instant of its creation, there were left in the interior of that globe, spacious and wide cavities, suitable for hell, purgatory and limbo. And in hell was created at the same time material fire and other requisites, which now serve for the punishment of the damned.' --- Mary of Agreda; ‘The Mystical City of God.’ AnanymousCatholic asked about Hell. He made very interesting comments, for I myself - as a normal Catholic trying, not always successfully to avoid sin - have had a lot of questions about Hell that are always dismissed as just by theological opinions.
The first is that God is just and therefore Hell for all eternity is a just punishment. May God forgive me but how can a person who dies with one mortal sin on their soul and who goes to Hell for all eternity with its fire and knowing loss of God be just. It as though it is a lottery. One can live a life of deliberate sin and at the last minute have the priest and avoid Hell getting to heaven eventually for all eternity. Another practicing Catholic can drop dead with a heart attack at a time when they have that mortal sin on their soul and go to Hell for all eternity. Perhaps what I failing to understand properly is the term 'Mortal' and what may not be, if you know what I mean.
Over the years I have been shocked at stories of torture throughout history. I think most of us would share this view. Some possibly deserve this punishment yes, but there is an end to it. But then I am taught that this Catholic God of Love has created ETERNAL punishments for humans. If fire is one of these, then the screams in that terrifying video reflect Catholic reality not fiction.
Why would our God think up such a punishment? Is that the God of love taught by Christianity? He created us with a certain nature and then ordered us to hold back on that nature at the risk of eternal punishment. On earth all punishments are temporary and our courts administer justice. I wish God would do the same, a certain time of punishment in line with the sin and then either heaven or NOTHING, gone. That it will go on without end is so terrifying it is almost beyond human comprehension.
Alas to be a Catholic I am obliged to accept that eternal Hell and all its punishments are just because God is Just. That I will do without really understanding how this can be. They say 'fear of Hell' is one way to get to Heaven, but what a motive for any religion! I must accept it without understanding it. Oh yes I have heard many theological explanations for this but none of them have ever made sense to me.