It's a fantasy role-playing game.

DM: You are Vax Vax'ildan, a half-elf rogue . You are the member of the famous group of adventurers. Previously, Tiny you, thanks to a potion that does that. Scanlan managed to go ahead and put in an Immovable Rod within its stomach, which held it up for a moment, before it decided to truly gain the advantage it needed to escape the circumstance, allowed it to tear through its body, as well as an arrow that was shot by Vex, towards her brother, in the hopes of, I don't know, being a symbol of hope?
DM: As he curls back, the cavern is revealed further. The pool does come to an end. There are pieces of stone that jut out of the floor. You do see now, scattered across the grounds, occasionally a bit of shine, a little coin-- gold, silver-- elements of wealth that've been dragged deeper into the cavern that have left behind them some remnants in the process of being carried and carted in.
Player: If I look back, can I see my sister from where I am?
DM: Actually, no. Because she's really well stealthed.
Player: She can't see me either?
DM: No. You guys have no visual perspective on each other. You've all stealthed away from your own party.
Player: Okay. There's a pool of acid right by me, yeah?
DM: Yes, there is.
Player: Is there dim light here?
DM: The light grows dim at about this point, then it becomes darkness at about this point.
Player: But you said that I can see a pool of liquid, right?
DM: Yeah. What little bit of daylight that's coming in the cavern entrance would be over here.
Player: Is the surface of the liquid flat as far as I can see?
DM: What you can see, it is flat. There's a little, very faint breeze that occasionally comes through so there's a slight disturbance here and there, but no specific visual disturbance.
Player: How far along that pool can I actually see? If you had to do a cut-off point?
DM: Because of your darkvision, being an elf, you can see pretty much to the edge of this.
Player: Okay. So it doesn't look like there's a big divot?
DM: There's no displacement of the pool.
Player: I'm going to creep along the wall towards that pillar. I'll stop in that corner, and then move towards you one. Does it give me a better view?
DM: A little bit of a further view, just the cavern continues in that direction.
Player: Can I still hear the same thing?
DM: You can hear it very faintly. You can't quite make out the source. There is something about the room and the air that's travelling through here. The sound itself, you're just barely catching it and it seems to be reverberating to a small extent off the walls of this cavern, which carry sound very well.
Player: What do I see if I look up?
DM: You look up, you see about 60 feet, 70 feet in the air, just past where your vision begins to fade-- The only reason you know there's a ceiling there is because there are a few points of rock, the top of the cavern does descend into stalactites-- it is?
