"The Wallroda dam is a dam in the Free State of Saxony. The dammed body of water is the Steinbach, a left tributary of the Große Röder.
The entire dam including the adjacent forest is part of the Massenei landscape protection area. Various types of dragonflies are native to the reed-covered shores of the lake, for example the great blue arrow and the blood-red darter. "- de.wikipedia.org/wiki/Talsperre_Wallroda
Unfortunately, the reservoir can be reached via a campsite if you come from the direction of Pulsnitz. And access is locked via a gate. But today I asked a camper if he had a key. And then let me pass to the lake there too. For this I was later rewarded for a great view over the reservoir.