Along the path on the eastern edge of the forest with a view of Pesterwitz we come to a memorial stone that reminds of Thorun Castle, which probably stood here. The castle was the subject of a court hearing in 1206, which was devoted to a dispute between the Bishop of Meißen and the Burgrave of Dohna. The legal act and the order for the demolition of the castle were handed down by means of a document, which is of inestimable value today, as the city of Dresden was first recognized in writing. There are several legends about the location of Thorun Castle. One that is widespread in the area is that of the treasure of the Burgwartsberg. A castle within the mountain is said to house innumerable treasures and a brewing pan full of gold and, on Midsummer Night, from June 23 to 24, illuminate a blue light from the mountain, which shows the way to the treasure. Edelgard, the daughter of the resident keeper, had herself specially transformed into a toad in order to recover the treasure from the narrow passages. She is supposed to guard the treasure today. It is only allowed to show itself in its real form and ask for redemption every 300 years. However, it is to be freed.