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, Towards the core and the back of this final defending pocket of uncorrupted forest is a stone building, windowless and overgrown. Nila determines that whatever the corruption is, it is not natural, and that there is some much older and much more powerful latent reasoning for it.
DM: Best you can see, no. It's pretty well made. The walls and the roof all appear to be made from stone.
Player: But no windows or anything?
DM: There are windows. You can only really see the front and right side of it, the southeast side of it from your perspective-- there is a single window. It is an arched window that looks like it may have been built at one point to hold glass or stained glass, but it is no longer there. You can see the soft, jungle-like flora at the base of it has swooped up and grown over and into the interior of the structure. Best you can tell from this distance, there is no visible light immediately inside, but there is a bit of natural light that is coming in through the open space.
Player: Can I go over to the window and take a peek in, stealthily?
DM: Sure, roll a stealth check.
Player: 12. I'll take a big swig of booze and then go over and try.
DM: Okay. You begin to dart across the open space, dodging through gravestones and as you're passing one of them, there is a bit of a thorned vine that catches the back of your cloak. It pulls taut before you get yanked on your neck, slip back, and Nott slams on the ground giving a little sound.
