Water… and a lot of it. It made a loud sound. The water. I heard it from above, before the overpass. An unfamiliar sound to me. And then I saw what was the cause of the unfamiliar sound.
It was water rushing through the slues… from Mälaren to Östersjön. A loud roaring sound of many masses of water flowing through the slues at a very high rate (many cubic meters per second).
There’s is a meter or more in height difference between the two. you can’t stop a mass of water or defy gravity, ever… no matter how much you want to.
You can try to stop the ocean, lake or the sea. If they decide to rise they will surely rise…