We had a trip to Germany close to Aachen to have a couple of dives in the Blausteinsee. This lake is overcrowded with American crayfish which grow to a phenomenal size. The place was quite empty as on August 15 the germans have to work and we do have a national bank holiday. Upon entry you come quickly across the masters of the lake

The lake contains some wrecks of different origins as bikes, X-mas trees, boats, ovens, etc. The visibility is good with an average of 4-6 m and it is quite clear, no need for a lamp. But on the other hand if you go deeper than 12 m it gets f***ing cold. The temperature is around 7°C at 24 m .
