The image shows a close-up of a concrete structure with a metal railing on the left side. The structure appears to be part of a larger structure, possibly a dam or a water treatment plant. The water is a light green color and there are small ripples visible on the surface. On the right side of the image, there is a large amount of green algae growing on the edge of the water. The algae is partially submerged in the water and is covering the entire structure. The image is taken from a low angle, looking down on the structure.