How the Panama Canal works
https://t.co/iyckQKDIOn https://video.twimg.com/ext_tw_video/1802133583017934848/pu/vid/avc1/720x1008/xV5LZb0WKKkN2k_V.mp4?tag=12
Discussion
#Leonardo da Vinci
https://naviglireloading.eu/come-funzionano-le-conche/
(There're other versions besides italian)