It's a fantasy role-playing game.

DM: You are Nott the Brave, a goblin rogue . You are the member of the famous group of adventurers. Previously,  However, upon noticing that some of the buildings on the eastern side of town began to light up with what appeared to be flame, you began to approach rather rapidly, seeing members of the city's citizens fleeing, screaming, and apparently there seemed to be some sort of attack. Upon going into the town, you realized that a number of these buildings were being set fire by an incursion of Gnolls.
DM: You begin to curve down the right path and there is a slight depression on one side that you glance over and look and it looks like some of the burlap that had been torn from the sacks earlier in the tunnel had been used to cover a three and a half foot wide pit that has been laced over to hide its presence.
Player: It's just burlap over a pit in the ground?
DM: Yeah, it's affixed with a couple of rocks in the sides, it's very light and would have fallen through. It only covers part of the path. The tunnel is about ten feet wide and the right side of it is where that pitfall is. You notice it and go. "Oh, hmm." This one does not snake, this one continues in a continual curve for another 40 or so feet before you're starting to get a little far from your friends. You can continue if you want.
Player: It just keeps curving and curving?
DM: It looks like it's going in a downward spiral.
Player: Oh, a downward spiral. Okay, I'll go back and report what I saw.
DM: Great album.
