It's a fantasy role-playing game.

DM: You are Percival de Rolo, a human gunslinger . You are the member of the famous group of adventurers. Previously, A scuffle ensues as they chase down a necromancer, a number of cultists, and some creatures from the Shadowfell. During the fray, Scanlan gets Sprigg back on his feet, and Keyleth kill a couple of the cultists with a Firestorm.
DM: You see, currently down below-- make a perception check. Actually, you wouldn't even see them from your perspective.
Player: I just rolled a natural 20.
DM: Right, it's blocking your vision from this side. You do see Scanlan, you see Sprigg who is currently conscious, you see this necromancer who is currently held with brambles, and you see two streaking flames and hear screams on this side of the building.
Player: Weird question, really quickly. Where is that giant log trap?
DM: Right there.
Player: How much swing does it have? Is it locked all the way over here, or is it hung back there?
DM: It looks more like a drop.
