An optical illusion rug, patterned with alternating black and light grey squares, occupies the majority of the frame

An optical illusion rug, patterned with alternating black and light grey squares, occupies the majority of the frame. The checkerboard design creates the visual effect of two large, distorted conical depressions or vortexes on a flat surface. The rug is positioned on a light-colored wooden floor, exhibiting visible grain and seams. No individuals, actions, or interactions are present. The environment is an indoor setting in Makurdi, Nigeria. A digital timestamp "2025/12/29 12:59" and the text "Enter text" are superimposed on the lower left corner of the image.