person pouring a dark, viscous liquid from a clear plastic bottle onto a mixture of gray and white particles on a surface

person pouring a dark, viscous liquid from a clear plastic bottle onto a mixture of gray and white particles on a surface. The gray particles appear to be small and granular, while the white ones are larger and more crystalline. The liquid is poured in a concentrated stream, creating a small pool on the surface. The surroundings appear to be outdoors.