The image shows a large propeller mounted on a concrete wall. The propeller is made of metal and has four blades, each with a pointed tip. The blades are arranged in a circular pattern, with the largest blade in the center and two smaller blades on either side. The center of the propeller has a small circular hole in the middle, which appears to be a part of a larger propeller. There is also a small plaque attached to the wall with information about the propellers. The plaque is white with black text and has a blue and red logo on it.