 The Wadden Sea is a very special place. This coastal area is shaped by the tides. Twice a day there are high and low tides. People live here on the so-called Halligen. These are small islands without dikes that are flooded by storm surges. The houses stand on Wafton, which are artificial elevations or dwelling mounds. This is how they protect themselves against storm surges. Archaeologists, geophysicists and geoarchaeologists investigate this area with modern methods. The North Frisian Wadden Sea is a very special natural landscape that is always changing. We have great opportunities here to explore subterranean cultural landscapes where the original settlement structures are well preserved and lie under the Waft sediments. This gives us a beautiful view of the time when you first saw this area. Of course, we are extremely interested in what has been here on Earth. We have a whole bundle of methods that we use. We do geophysics, geomagnetic, etc. That means that you don't get pictures in the ground. We went over here last year and this year we saw that there is something structured. It is amazing what you can find with natural sciences without touching the ground. You can say that there were people here, but I am an archaeologist. That means I want to dig out, I want to keep things in hand, I want to look at layers, I want to try to understand them with people. We would like to find out whether there has been a continuity of settlement here, whether one settled here in the early Middle Ages until the Middle Ages and when this waft structure was established. And we actually found a high-media waft where salt was found. We found bender from red bullfrogs. That means we know that just in the Middle Ages salt village was massively dismantled and here we actually have a work area where this happened. For reasons of nature conservation, scientists are only allowed to dig small pits, still large enough to make further finds. If I find myself ceramic, I also try to think about what people have hidden behind it. Or if you have this situation here, that people have worked here, that is extremely exhausting. That is also something that we have learned in this week how exhausting this ground is, how hard work it is to make everything usable here. And then of course I dig out about the people back then with even simpler methods. The day after day without functional clothing, and that is something that touches me very much and that also really appears as a picture in my head. We of course try to understand how the process was. We know that in the 11th and 12th century here in this landscape, which was a relatively wild marsh and moor landscape at that time, and was very much drawn by water flows, you went in there, it colonized and the stronger this landscape was taken into possession, the bigger the problems, because of the opposite. And we just try to find out in what extent you had to react to the additional influence of the sea on higher rising floods and what problems you had created. Great drownings have changed the coastline significantly. The Great Storm Surges in 1362 and 1634 claimed human lives and led to losses. Entire locations went under in the North Sea. To this day, attempts are being made to reclaim land from the sea. Today the remains of past times are interesting research objects for archaeologists. When you get in here, you immediately have a location of a well-known warf. You can still recognize the small crevices that pass through, locations where you always find bones. You always find ceramic parts. These are the remains of this warf. If we go on at this point, then towards Japsand, you also find very striking structures that run parallel to each other. And it is wonderful to see that these are the old Salstorff dams, where you have turned the planks up and in fact these edges are still preserved so that you can see very specific structures. And these are finds that are very comfortable to reach here, which are partly still in the written delivery, such as this downed warf, but also older traces. Even if archaeologists usually deal with the past in their profession, they also have to regularly react to current developments. What we notice, of course hard to say if the climate change has an impact on it, is, of course, that the archaeological finds are strongly attracted to passion. The Wattemäher is a very dynamic space anyway, that is, the wad streams through which the water flows at the times, are a steady change and are stored. That means that the material is stored all the time and thus the finds are released, but also eroded. And we can actually see this in the physical measurements in which some of the finds have already been emptied by such pril deposits. And now with the addition of the climate change and a higher storm flow frequency, it is of course to be feared that these cultural traces that are still very, very well preserved in the underground, that they will be destroyed and that we have to hurry a little so that everything can be completed and explored so that this knowledge is not lost. We of course wish that we can build a strong international cooperation to understand this coastal region in the whole, which has a very interesting history. This year 2021 it takes place in Kiel at our university and there are 2,500 participants virtually and because of the situation in this moment also the excursions are virtual. You just saw one of the four virtual excursions and these virtual excursions are about very important archaeological sites and features here in northern Germany but they are also about the transformation of knowledge to our society. I think this is very important for also the motto of the conference, widening horizons. Widening horizons means that we use the knowledge of the past which we archaeologists produce together with other scientists for the present to tackle also the future and in this sense I recommend to you also to have a look at the other 3 virtual excursions in this program.