The Marien-Canyon is a beauty of nature located at Lake Constance; south bank of the Überlinger Lake part. A sharp decline trail through the forest starts at a car parking place and heads to the ruin castle of Kargegg. From this place onwards the origine, picturesque river valley trail between the rocks begins. Small steps along and across a creek guiding the visitors down to the shore of Lake Constance. When you reach the shore a fireplace; to make your own barbeque , a little kiosk and a beautiful little beach place with a small landing stage is waiting for you.