What the bible says Hell is like

[snowtracks]

Snowy, I'm going to go full Drich for a moment and ask for book, chapter and verse for the things you say are known.

Then I'm gonna need an intervention, guys, cos full Drich is not where you want to be for long.

Handy to know eschatology (https://en.wikipedia.org/wiki/Christian_eschatology).
The New Creation and Hell won't have the same physics. This universe will be destroyed nearly instantaneous before absolute heat death* (when all atomic particles cease movement around 1 trillion future). After 13 billion years, there's virtual no time left for this universe. That makes sense, since God prepared the universe in advance for man's arrival and once man has arrived and served God's purposes for this universe, it will no longer exist.
Man and Angels, (who watch God lay the foundation of the Earth some 5 billion years ago as an example type)** both spiritual beings will continue to exist however in one of two future dimensions that will be forever sealed off from one another - Christ used the phase 'a great gulf fixed'.*** Sin and evil will never enter the New Creation.
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First of all, the new creation (this current universe will burned-up like a scroll), and Hell don’t currently even exist but are future extra-dimensional creations (after this current period, the 1000 year reign of Christ on Earth and the Great White Judgment). For that reason, the biblical description of Hell is metaphorical (the New Creation will not be confined by the current laws-of-physics)4*. The center piece of the New Creation is the New City of Jerusalem (Holy City) described as:
Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and there was no longer any sea. I saw the Holy City, the new Jerusalem, coming down out of heaven from God, having the glory of God. Her brilliance was like a very costly stone, as a stone of crystal-clear jasper. There were three gates on the east and three gates on the north and three gates on the south and three gates on the west. And the wall of the city had twelve foundation stones, and on them were the twelve names of the twelve apostles of the Lamb. The city is laid out as a square, and its length is as great as the width; and he measured the city with the rod, fifteen hundred miles; its length and width and height are equal…  
   
Any object in weightless space larger than a couple of hundred miles in diameter has enough mass for its gravity to force it into a spherical shape. But in the New Creation, The City maintains it’s cubic shape since gravity is no longer a force. http://clarkplanetarium.org/why-are-plan...nt-page-1/

What is known is that both the New Creation and Hell are future extra-dimensional and are enduring (neither place is subject to the 2’nd law of thermodynamics so Hell is not subject to physical burning). 5*. The language used to describe Hell is metaphoric; the literal words don't describe conditions of another future dimension; but it is known that it is enduring.    
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* - Ref: 2 Peter 3:10-11 -  But the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything done in it will be laid bare. Since everything will be destroyed in this way, what kind of people ought you to be? You ought to live holy and godly lives.

** - Ref Job 38: 4-7 “Where were you when I laid the foundations of the earth? Tell me, if you know so much. Who determined its dimensions and stretched out the surveying line? What supports its foundations, and who laid its cornerstone as the morning stars sang together with the angels?

*** - Ref Luke 16:26 (Speaking of one of two places after death) - And beside all this, between us and you there is a great gulf fixed, so that those who would pass from here to you cannot; neither can they pass from there to us.

4* "The equations of General Relativity would break down at the singularity" http://www.hawking.org.uk/the-origin-of-...verse.html

5* - Ref Romans 8:21 "that the creation itself will also be set free from the bondage of decay" (entropy)