Human: Generate for a lonesome scene inside a tunnel mine with a ceiling, walls, and floor. Assistant: 
If mining could be called an art, this tunnel may be as close as it gets. A perfectly flat granite floor, its surface roughened just a little for traction, leads off to the southeast. The walls follow, their sides unerringly vertical and neither moving together nor widening out. The ceiling is a flat, smoothly chiseled expanse of grey granite. Thick beams set the same exact distance apart all the way down the tunnel support the walls and ceiling.