Three Gorges Dam, China.

Did you know?

When the dam is at its maximum, the reservoir holds 42 billion tons of water. A shift in mass that size affects Earth, slowing its rotationa and increasing the length of a day by 0.06 microseconds.

https://video.nostr.build/eeff45ee10643a9286ab6b6b0aa026f98a46b79175ed19263af029616ce6b3ab.mp4