 The site was discovered in the late 70s by a recreational divers and then was excavated by a number of teams. This is Bay of Puts with this very characteristic geological feature. If you look on the map of Poland, this sort of narrow sandbar called Kalpeninsula is very characteristic on the map. And it basically had the Puts bay from the Baltic Sea. Geology probably had a very important impact on development and later on collapse of the Puts cargo. The bay itself is divided by external bay and internal bay. The division is actually very clear and the reason for that is geology as well. It's a translated from English seagull sandbar, which is this sandbar from the other groups like that. When the sea level is lower, you can basically walk from Graeba to Kuzdica. It's more than 10 kilometers just on the small places where it was actually drenched for sailing prism you have to swim. But basically it is probably again this geological feature which had very big impact on development of Puts. And basically the cargo in Puts were stopped in use more or less at that time when larger ships were developed. When the Koga came into use in the Baltic and it needed deeper water. So it is more or less the same time. It is always nice to see a map on a sandbar scale because you can see nothing. And you can say everything is there. We really did a great job. We did the maritime institute from the night before us. They take 300% coverage. So basically we see when you enlarge the picture you can see very small details. Very small details I would say in the size of 5-10 meters elements you can see from the bottom metric side. This is of course a modern channel built for the industrial zone which operated here in the 80s of the 20th century. Now it is almost out of use. But basically what we really realized after the magometric survey and multi-bin survey is the scale. It is 15 hectares of wooden structures. Thousands and thousands of wooden piles with very few dendro-pronological dates so far. Work from the 70s. Well discovered in the 70s this is the work of Wiesbaw Stempin, the first researcher on the site and he finds amazing stuff. You find a very elusive one in poetry, a lot of artifacts. But above all you find a couple of books. I will talk about the books a little later. With the Polish scholar basically saying it is mixed Scandinavian-Slavonic tradition of medieval building. But at least some of the books are very, very Scandinavian. Another stage of research is done in the 90s by my institute from Poland. And by the Central American Museum on that site. Mostly focused on areas which include this to shipwrecks. Still the five hectares were surveyed at that time. This is some work which was done in 2014 for national heritage. Both completed by the maritime museum. It basically digitized some elements which were provided by earlier research. And this is our work in the project. It is European funded project under the interest of Central Europe. It is called Virtual Arc. It is the project which includes eleven partners from nine countries. And the goal of the project is to visualize archaeological sites which are not accessible for general public. Majority of the partners in the project are dealing with mines. Including Halstadt and other mines which are not accessible for the public. But also there are two underwater sites. One is in Poland and one is in Croatia. We started as I said with the botometric survey, with the multidim survey. We also used the air photography and used the photogrammetry to build the 3D models. Of course we had first the idea of creating a nice model of the harbour. And when there we realized that it was realistic. There are thousands of wooden piles on these areas that are more than 15 hectares. And we don't know the faces. We know the multi-face site. So we very quickly focused on selected areas and built the models for selected areas. It is this year's work. So it is just from couple of weeks of work we have two terabytes of data. Then you have to deal with it. And if you build the models you just multiply the data and it is getting more and more complex. Work is just very short. One of the structures which we find there. And the depth is quite shallow. It is between 1.5m, 1.8m, 2.5m depth. When I looked from the archives and the reports from 90s, 11 or late 80s, the visibility was like 12 meters. Now when we have 3 meters we are happy. And the problem is the vegetation which overgrow the structure. So we start working in April and it was the first heatwave of the summer. And as we work day by day we could see the vegetation was sort of growing. It was growing even on the equipment which we left overnight under the water. So we will see later on the movie how difficult it is, particularly for the trajectory if you have this sort of hairy thing sitting on the wooden structure which moved with the water. And it saw the scale of the sides in this aerial photography. These dark things are called peat. It is a peat and the whole archaeology is sitting in this peat. So more peat, more archaeology you expect. The things which we are finding are on the edge of sand and peat. Because it is the shallow water, the water, in particular the waves when you have the eastern or northeast wind, the peat is removed so the archaeology is removed with the peat as well. So the size is actually in danger and I would say it is a perfect example that UNESCO Convention does not work. The most interesting things which probably were the shipwrecks is that four parts of them spread all around. So again there is no any pattern how they appeared. Just briefly, this is the first one which we are finding from the 14th century. It is still there, still under water. Various sort of salt and baltic type of boat and sort of... Then it is this boat. I think it is underestimated in the literature. It has not been published perfectly. But it is a perfect boat. You could see the bars or the sailors. You could see sort of wooden things with all the bars. It looks very much as it can be named in long boats. And it really... I would say even the Scandinavians didn't find a boat in a condition like that. This is the elements which hold the mast. And it almost looked like it was on the famous boat. So the boat was dismantled, it was put in the preservation and hopefully this year or next year will be put together. I hope so. Again this is a drawing from that boat. The chronology of the 10th century and in the sense of the techniques it is very much as I say sort of a viking boat. There are another two boats. The part number three is from the 13th century. That one was excavated by our institute. And during the war we find another boat which is sitting under it. So this is number five and it is still there. Still in the sea. And this was also dismantled and taken into preservation. This is what I mentioned already. This is a small dugout. What is in the state is the chronology. Eighth century. We move into earlier stuff. We also find artifacts from a migration period on the side. It seems that deeper in the deep, really interesting things might sit or wait to be discovered. Also it doesn't look spectacular. The timbers. But they are the timbers from the last boat or zone boat with the historic type of boat. Which means we can really expect something much earlier than the early migration boat. And then the structures. Again look at this here. It is just 100 meters. And the site is 15 meters. When you die there for the first time you just don't understand at all what is happening. There is no like you have a bridge or you have a pier. You die there and you record it. So the stat is sort of everywhere. There is some kind of structure here. Which is kind of like this structure. So the three parallel structure is going that way. And you find the piles are from the size of 3-4 centimeters. After this size. So it's really neat complex dating. Including C14 and the chronology. That just suggests how we could do more. Of course we find also stuff which is more easy to interpret. It's like the structure which appears. They sort of secure the edge of the harbor. And there are places where three elements like that sitting on top of each other. The structure which is so we were earlier we don't know what was the purpose for it. But obviously it's still there. And then reconstruction. Because of the aim of the project is that we have visualized somehow. Of course now we know we won't provide the archaeological truth for our construction. It will be a rather artistic vision which probably will come out at the end of the project. If you can take the privilege and show me some shorts. Moving out what we done last year on this season. It's how the elements are recorded. And here you have the construction of the pier. It's another harbor in the books. It's an element of the vegetation. And try to do the photogrammetry of the stack which is moving like that. So it wasn't there when we started. It started to grow day by day. And just into the stack it was covered completely. It was cleared by divers. So it sent people to do that from the vegetation before taking the complete picture of it. It's much easier to do something flat which is like on the floor. But all like amphora which is a spread appeal. With all that data is the georeference. All that stuff on the georeference we can compare the pictures taken in the 80s from the air. And we can see how much people there and how much is today. There are some zones where so as much archaeology is missing as well. We also try to use the scooter and put the three cameras in one go. Because the actors now allow you to do the photogrammetry from the movie. But it doesn't really work very well. As I said, you have to spend time going around the files to have the perfect look. Thank you very much.