Revelation 9:1 And the fifth angel sounded, and I saw a star fall from heaven unto the earth: and to him was given the key of the bottomless pit.
Revelation 9:2 And he opened the bottomless pit; and there arose a smoke out of the pit, as the smoke of a great furnace; and the sun and the air were darkened by reason of the smoke of the pit.
Revelation 9:11 And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon.
Revelation 11:7 And when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.
Revelation 17:8 The beast that thou sawest was, and is not; and shall ascend out of the bottomless pit, and go into perdition: and they that dwell on the earth shall wonder, whose names were not written in the book of life from the foundation of the world, when they behold the beast that was, and is not, and yet is.
Revelation 20:1 And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.
Revelation 20:3 And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season.
What are some things we can deduce about this pit?
There is a key in relation to it, and a star that fell from heaven is then given this key(Revelation 9:1). This key is used to open it(Revelation 9:2). This pit has a king over them(Revelation 9:11). A beast ascends out of it once it is opened with the key to it(Revelation 11:7 Revelation 17:8). An angel comes down from heaven, having the key of the bottomless pit(Revelation 20:1). The devil is cast into this pit for a thousand years(Revelation 20:3).
So in what sense should the bottomless pit be understood as? If it's not meaning in a literal sense, then that means it's being used figuratively to represent something else. So what would that be then?
Even tho I asked whether there's a literal bottomless pit, my motivation for asking, is to Scripturally define exactly what it is, if it's not meaning as in literally. And no, let's not go that route by asking silly questions and making silly comments, like how can anything be literally bottomless, etc. That hardly Scripturally proves what exactly the bottomless pit is meaning, if the sense is not literal in some way or another. Let's try and let the Bible decide for us.
Let's look at Revelation 9:2 a little closer. ...the sun and the air were darkened by reason of the smoke of the pit. In order to try and determine whether the smoke is literal or non literal, I think we would first need to determine if the sun and air are to be understood here as literally, or as figuratively? If literal, then how does smoke from a non literal place, the bottomless pit, then darken the literal air and sun?