You all, especially Mikael who lives closest to these parts, still remember this area before the Flood. It was just fields, some forests and nature, nothing unusual, but the dirty, potentially dangerous grey water that rose from below ground during the Flood has turned this area into a swamp. As you follow the lead of Sabine who saw Mark's photos and thinks she has an idea of where to go, you often have to test where to step in order to not sink into the creepy mud all the way up to your knees.
There are birds around but only far in the distance and it seems that many wild animals of other kinds avoid the marshes entirely. Here and there, you find large frogs and toads or you see something move out of the corner of your eyes but disappear before you can turn your heads, but for the most part, the swamps seem empty and uncomfortable. The marshes are damp, smelly and, despite summer not having arrived yet, full of mosquitoes.
As you close in on the location where Sabine believes the photos to have been taken, you notice pieces of black cloth tied to the branches of many trees, damp from rain and swaying weakly in the light wind.