large, rectangular canvas propped up on the floor

large, rectangular canvas propped up on the floor. The canvas is painted a dark gray or black and features several bright green, irregular shapes. The largest of these shapes resembles a distorted question mark. To the left of the question mark, there are two smaller green shapes that appear to be footprints, with distinct toe shapes visible on the lower footprint. Another green shape, curved and somewhat rounded, is visible at the bottom right of the canvas. The canvas is positioned on a light-colored wooden floor with a grid pattern, suggesting it is indoors. In the background, a black surface is visible, possibly a wall or another piece of furniture. To the left of the canvas, the edge of a wheel with spokes is visible, suggesting a trolley or similar object is nearby. The lighting in the scene is dim, with some areas brighter than others, casting shadows. The image does not contain any identifiable landmarks or features that would suggest a specific location within the city of Kameno, Bulgaria.