Stairs 

"Stairs" is a pencil drawing by German artist Karl Ballenberger. The artwork depicts a set of stairs in a simple, almost minimalist style. The perspective of the drawing is such that the viewer sees the stairs from a slightly elevated angle. The stairs themselves are rendered in detail, while the background is left largely empty, emphasizing the subject of the artwork. This drawing showcases Ballenberger's keen eye for architectural details and his ability to create a sense of depth and perspective in his works.