From a high angle, a person is rappelling down the face of a concrete dam, using a pressure washer to clean the surface. The person is wearing a dark suit and an orange helmet, suspended by ropes, with the pressure washer in hand, spraying water down the dam. The dam is curved, with visible vertical striations and wet patches. A metal staircase or walkway is visible along the edge of the dam, reaching into the structure. The sky is visible at the top of the frame, showing a clear, sunny day. Trees are visible at the top of the dam wall.