Here's another map from my sketch book. This time it's a room in a dungeon with a pool at one end. You can download it in color or line art. The stones of the floor make up a 1" grid, so there is no gridless version. Hope you get some use from it.

Dungeon Room - Color

Dungeon Room - Line

Alerternate Dropbox Links

Dungeon Room - Color

Dungeon Room - Line