In Ca Mau, Vietnam, dams are essential infrastructure for preventing saltwater intrusion. The locals have devised a method to create shortcuts through these dams. During the monsoon or rainy season, the dam gates are opened, allowing boats to pass freely without needing these "boat bridges." In the summer months, the gates are closed to prevent saltwater intrusion. https://video.twimg.com/amplify_video/1827047061239263232/vid/avc1/720x1092/epnIn8UQv4CYPoqT.mp4?tag=16