very high concrete dam in a mountainous area

very high concrete dam in a mountainous area. The camera is positioned high up, offering a downward view of the dam and the surrounding landscape. The dam is massive and appears to be built in a steep canyon. Below the dam, there are concrete structures, likely associated with the dam's operations, including a building and what seems to be a reservoir or a settling basin with greenish water. The sky is overcast, suggesting a cloudy day. There is a system of wires and cables in the foreground, possibly part of the infrastructure related to the dam. A group of people can be seen swimming in the pool.