

A spiral staircase twisting through a warped, vortex-like interior, drawn in black ink on white with dense hatching and sweeping concentric banisters. The finder squares are disguised as boxy stair landings and window-like frames, while the modules are carried by the cross-hatched shadows and the knotted central form. Strong black and white contrast keeps the pattern readable, and the fine parallel strokes are spread evenly across the whole frame. The curving rings pull the eye inward toward a cluster of rounded openings at the center.