After a lot of searching in the near and far vincinity I found a great marshland with a wonderfully swamp in it. We went there yesterday night again to see how it was, but the rain - or let's rather say - a rain and thunderstorm with huge amounts of water pouring down surprised us and so in the end the whole marshland was flooded and we were unable to try out that swamp again. In fact the whole area was flooded, it looked like a huge lake, rather then a swamp.
But anyway - I finally took some pictures for you to enjoy. Hopefully next time I will have a more dryer chance to visit there - even tho it might take till next year as I might visit there earliest in september again and then there is too much rain and the sunny season is over already.
For the pictures - there is one with a general impression of the swamplands under water, looking like a lake and one with the part that I tried out. Sadly also flooded, but you might get the idea how it may look when dry. I also stitched together a panorama of that area. ( Look here to see how to stitch a panorama by yourself ).