An irregularly shaped, artificial pond is depicted outdoors in Dolna Mitropolia, Bulgaria

An irregularly shaped, artificial pond is depicted outdoors in Dolna Mitropolia, Bulgaria. The pond is lined with a light green plastic sheet and its perimeter is bordered by a single layer of varied, natural river stones. The water within the pond is turbid, appearing light green-brown, with surface agitation and bubbles particularly evident on the left side. Multiple goldfish or koi are visible swimming beneath the water's surface; at least six individuals with orange-red and white coloration are identifiable. Submerged aquatic plant growth or algae forms dark patches on the pond bottom. Two dark-colored, circular containers, possibly baskets for plants or filter media, are partially submerged, each containing light-colored spherical material. A black submersible pump or filter unit is situated in the lower right portion of the pond, connected to a black electrical cord that extends towards the lower right edge. A fine green mesh net is positioned just below the water's surface in the upper central area. Small white particles are scattered across the water. The immediate area surrounding the pond includes green grass along the right edge and bare soil or disturbed earth with sparse vegetation on the left and upper-left margins. A wire fence or trellis structure is faintly visible in the blurred background. No people are present in the scene.