Hi John, thank you!

This lake is a vulcan in our Eifel mountain range. At the bottoom of the lake is an Halifax-Bomber and may be a second airplane from WW2. The Halifax-Bomber was checked 2008 by divers, individual fragments of the machine have been recovered, the wreck itself or bombs wasn't found.

https://de.wikipedia.org/wiki/Laacher_See

Olaf